Initial blood work, cycle tracking and fertility analysis is done. To begin IVF, your doctor or fertility specialist will evaluate your hormone levels and menstrual cycle to determine what medications and plan of action may be needed. You may also undergo a transvaginal ultrasound to examine your ovaries and reproductive system, ensuring that they are healthy.
The diagnosis is one of exclusion — that is, one which is made only after all the existing tests have been performed and their results found to be normal. This is why the frequency of this diagnosis will depend upon how many tests are done by the clinic — the fewer the tests, the more frequent this diagnosis. And the better the tests, the more likely you are getting a diagnosis instead of being told it's "unexplained."

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^ Hozyasz, K (March 2001). "Coeliac disease and problems associated with reproduction". Ginekol Pol. 72 (3): 173–9. PMID 11398587. Coeliac men may have reversible infertility, and as in women, if gastrointestinal symptoms are mild or absent the diagnosis may be missed. It is important to make diagnosis because the giving of gluten free diet may result in conception and favourable outcome of pregnancy.

The number to be transferred depends on the number available, the age of the woman and other health and diagnostic factors. In countries such as Canada, the UK, Australia and New Zealand, a maximum of two embryos are transferred except in unusual circumstances. In the UK and according to HFEA regulations, a woman over 40 may have up to three embryos transferred, whereas in the US, there is no legal limit on the number of embryos which may be transferred, although medical associations have provided practice guidelines. Most clinics and country regulatory bodies seek to minimise the risk of multiple pregnancy, as it is not uncommon for multiple embryos to implant if multiple embryos are transferred. Embryos are transferred to the patient's uterus through a thin, plastic catheter, which goes through her vagina and cervix. Several embryos may be passed into the uterus to improve chances of implantation and pregnancy.

IUI is a procedure during which processed and concentrated motile sperm are inserted directly into a woman’s uterus. This procedure is timed according to a woman’s ovulation, and may be performed one to two times in the days immediately following the detection of ovulation. After ovulation a woman’s egg is picked up by the fallopian tube and waits there for the sperm. Since the IUI procedure deposits higher concentrations of good quality sperm close to where the egg is waiting, the chances that the egg and sperm will find one another are increased.
IVF using no drugs for ovarian hyperstimulation was the method for the conception of Louise Brown. This method can be successfully used when women want to avoid taking ovarian stimulating drugs with its associated side-effects. HFEA has estimated the live birth rate to be approximately 1.3% per IVF cycle using no hyperstimulation drugs for women aged between 40–42.[63]
Fertility expert Zita West has noticed this increase at her London clinic. "The main reason," she explains, "is age. Women are having babies later." Exhaustion also plays a part. "The sleeplessness of life with a small child can't be underestimated," she says. "You might still be breastfeeding, you might be sharing a bed with a toddler, you might be holding down a job at the same time. Basically, there's not a lot of sex happening."
4. IVF or In-Vitro Fertilization - IVF means eggs are collected and fertilized outside the body, in a laboratory. This is followed by transferring the embryos into the uterus. This advanced technology has resulted in many successful pregnancies in women who had lost hope. During IVF - In-Vitro Fertilization, women can choose to freeze their healthy eggs for future use.
Medical treatment of infertility generally involves the use of fertility medication, medical device, surgery, or a combination of the following. If the sperm are of good quality and the mechanics of the woman's reproductive structures are good (patent fallopian tubes, no adhesions or scarring), a course of ovulation induction maybe used. The physician or WHNP may also suggest using a conception cap cervical cap, which the patient uses at home by placing the sperm inside the cap and putting the conception device on the cervix, or intrauterine insemination (IUI), in which the doctor or WHNP introduces sperm into the uterus during ovulation, via a catheter. In these methods, fertilization occurs inside the body.
Male infertility may be caused by trouble with sperm delivery due to structural difficulties like testicle blockage or damage to the reproductive organs, sexual function concerns such as premature ejaculation, or genetic conditions including cystic fibrosis. Another root of male infertility may be abnormal sperm function or production, often due to genetic defects or health problems including diabetes or certain sexually transmitted diseases. Other risk factors include overexposure to certain environmental factors, such as alcohol, cigarette or marijuana smoke, chemicals, and pesticides, as well as frequent exposure to high temperatures (hot tubs and saunas). Specific cancers and their treatments can also be harmful to male fertility.

Success rates vary with the number of embryos transferred. However, transferring more and more embryos at one time does not increase the chance of live birth significantly, but may only increase the risk of a multiple pregnancy, and its associated risks. The impact of the number of embryos that are transferred also varies with the age of the woman.  
Initial blood work, cycle tracking and fertility analysis is done. To begin IVF, your doctor or fertility specialist will evaluate your hormone levels and menstrual cycle to determine what medications and plan of action may be needed. You may also undergo a transvaginal ultrasound to examine your ovaries and reproductive system, ensuring that they are healthy.

The Fallopian tubes are the site for fertilization before the embryo makes its way to the uterine cavity for implantation. If the Fallopian tubes are damaged, fertilization may not occur. If one Fallopian tube is blocked, it may be due to inherent disease involving both Fallopian tubes; even if the other Fallopian tube is open, it may not be able to provide the appropriate nurturing environment for fertilization and early embryo growth to take place.


Laboratories have developed grading methods to judge ovocyte and embryo quality. In order to optimise pregnancy rates, there is significant evidence that a morphological scoring system is the best strategy for the selection of embryos.[72] Since 2009 where the first time-lapse microscopy system for IVF was approved for clinical use,[73] morphokinetic scoring systems has shown to improve to pregnancy rates further.[74] However, when all different types of time-lapse embryo imaging devices, with or without morphokinetic scoring systems, are compared against conventional embryo assessment for IVF, there is insufficient evidence of a difference in live-birth, pregnancy, stillbirth or miscarriage to choose between them.[75] Active efforts to develop a more accurate embryo selection analysis based on Artificial Intelligence and Deep Learning are underway. Embryo Ranking Intelligent Classification Assistant (ERICA),[76] is a clear example. This Deep Learning software substitutes manual classifications with a ranking system based on an individual embryo's predicted genetic status in a non-invasive fashion.[77] Studies on this area are still pending and current feasibility studies support its potential.[78]
^ Siristatidis C, Sergentanis TN, Kanavidis P, Trivella M, Sotiraki M, Mavromatis I, Psaltopoulou T, Skalkidou A, Petridou ET (2012). "Controlled ovarian hyperstimulation for IVF: impact on ovarian, endometrial and cervical cancer—a systematic review and meta-analysis". Human Reproduction Update. 19 (2): 105–23. doi:10.1093/humupd/dms051. PMID 23255514.
In 2008, a California physician transferred 12 embryos to a woman who gave birth to octuplets (Suleman octuplets). This led to accusations that a doctor is willing to endanger the health and even life of women in order to gain money. Robert Winston, professor of fertility studies at Imperial College London, had called the industry "corrupt" and "greedy" stating that "one of the major problems facing us in healthcare is that IVF has become a massive commercial industry," and that "what has happened, of course, is that money is corrupting this whole technology", and accused authorities of failing to protect couples from exploitation: "The regulatory authority has done a consistently bad job. It's not prevented the exploitation of women, it's not put out very good information to couples, it's not limited the number of unscientific treatments people have access to".[101] The IVF industry has been described as a market-driven construction of health, medicine and the human body.[102]
Epigenetic testing may allow patients to forgo the cost of multiple rounds of IVF by predicting whether embryos will fail. Equipped with this information, couples can have their IVF cycles optimized to account for embryonic versus fertilization issues. This represents a significant leap for the medical community given that 36% of couples struggling with unexplained infertility are currently over-treated.
Apart from poor egg quality at advanced maternal age, older women are also less likely to respond to ovarian stimulation hormones that cause the release of multiple eggs. Being able to produce a dozen of eggs significantly increases the odds of success. It allows your fertility practitioner to choose the egg with normal genetic makeup and best likelihood of implantation. In both nature and IVF, not all eggs are suitable to produce a pregnancy. Ideally, you would produce 8-15 eggs after ovarian hyperstimulation so that some of them are genetically normal and perfectly matured.

If you're using your partner's sperm, he'll provide a semen sample at your doctor's office or a clinic through masturbation the morning of egg retrieval. Other methods, such as testicular aspiration — the use of a needle or surgical procedure to extract sperm directly from the testicle — are sometimes required. Donor sperm also can be used. Sperm are separated from the semen fluid in the lab.
If IVF were to involve the fertilisation of only a single egg, or at least only the number that will be implanted, then this would not be an issue. However, this has the chance of increasing costs dramatically as only a few eggs can be attempted at a time. As a result, the couple must decide what to do with these extra embryos. Depending on their view of the embryo's humanity or the chance the couple will want to try to have another child, the couple has multiple options for dealing with these extra embryos. Couples can choose to keep them frozen, donate them to other infertile couples, thaw them, or donate them to medical research.[90] Keeping them frozen costs money, donating them does not ensure they will survive, thawing them renders them immediately unviable, and medical research results in their termination. In the realm of medical research, the couple is not necessarily told what the embryos will be used for, and as a result, some can be used in stem cell research, a field perceived to have ethical issues.
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In the US, up to 20% of infertile couples have unexplained infertility. In these cases abnormalities are likely to be present but not detected by current methods. Possible problems could be that the egg is not released at the optimum time for fertilization, that it may not enter the fallopian tube, sperm may not be able to reach the egg, fertilization may fail to occur, transport of the zygote may be disturbed, or implantation fails. It is increasingly recognized that egg quality is of critical importance and women of advanced maternal age have eggs of reduced capacity for normal and successful fertilization. Also, polymorphisms in folate pathway genes could be one reason for fertility complications in some women with unexplained infertility.[59] However, a growing body of evidence suggests that epigenetic modifications in sperm may be partially responsible.[60][61]
Post transfer – You’ll likely take progesterone and estrogen to improve implantation and pregnancy rates. If the transfer is successful, a blood pregnancy test will be positive in 10-14 days. From there, ultrasounds are used to ensure the implantation site as well as check for a heartbeat. The good news is that once a heartbeat is detected, the pregnancy has a 90-95% probability of the pregnancy resulting in a live birth.
How will you handle a multiple pregnancy? If more than one embryo is transferred to your uterus, IVF can result in a multiple pregnancy — which poses health risks for you and your babies. In some cases, fetal reduction can be used to help a woman deliver fewer babies with lower health risks. Pursuing fetal reduction, however, is a major decision with ethical, emotional and psychological consequences.
During the selection and transfer phases, many embryos may be discarded in favour of others. This selection may be based on criteria such as genetic disorders or the sex.[125] One of the earliest cases of special gene selection through IVF was the case of the Collins family in the 1990s, who selected the sex of their child.[126] The ethic issues remain unresolved as no consensus exists in science, religion, and philosophy on when a human embryo should be recognised as a person. For those who believe that this is at the moment of conception, IVF becomes a moral question when multiple eggs are fertilised, begin development, and only a few are chosen for implantation.[citation needed]

Undergoing fertility treatment requires precise scheduling of frequent tests and procedures—a tricky proposition when you're a parent. "I've had to go to the doctor early in the morning three times a week for testing," says Bozinovich. "Who can you find to babysit at 7 a.m. on a weekday?" (The answer: a grandparent or, when all else fails, a nurse at the doctor's office.) Your instinct might be to keep your treatment a secret, but it can make your life easier to enlist a friend or relative to help with child care. Also, choose a doctor's office you're comfortable with. You'll be spending a lot of time there; a compassionate staff can make treatment easier.


Pelvic inflammatory disease (PID) is the most common and serious complication of sexually transmitted diseases (STDs), aside from AIDS, among women. The signs and symptoms of pelvic inflammatory disease include: fever, vaginal discharge with a foul odor, abdominal pain, including pain during intercourse, and irregular vaginal bleeding. Pelvic inflammatory disease can scar the Fallopian tubes, ovaries, and related structures and lead to ectopic pregnancies, infertility, chronic pelvic pain, and other serious consequences. Pelvic inflammatory disease treatment includes several types of antibiotics.
A closer look at the data suggest that the benefit of letrozole over clomid depended on the BMI of the participants. For patients with a BMI of less than 30 kg/m2, the cumulative live birth rate was approximately 30% for each group. However, for patients with a BMI over 30 kg/m2, twice as many patients had a live birth in the letrozole group than the clomid group.
When you face secondary infertility, you’re dealing not only with the typical ups and downs of TTC, but also with the additional emotional fallout that is unique to those having difficulty getting pregnant with baby number two. In addition to feeling disappointed and upset, you may also be feeling shock (“I got pregnant so easily the first time, there’s no way I could have infertility problems”), guilt (“I already have a child, so I should be happy”) and even isolation (“I can’t connect with the people facing primary infertility and I can’t connect with my friends who have multiple kids”). How do you reconcile these conflicting emotions — and how do you tackle them while trying to raise the child you already have?
For example, untreated Celiac disease may in some cases of unexplained infertility. A 2016 reanalysis of previous research studies have found that Celiac disease may be diagnosed about six times more frequently in women with unexplained infertility compared to the general public. The study authors noted, however, that previous studies were small so it's hard to know exactly how accurate those odds are. In addition, it also appeared that women with any type of infertility were more likely to be diagnosed with celiac disease.
Fertility expert Zita West has noticed this increase at her London clinic. "The main reason," she explains, "is age. Women are having babies later." Exhaustion also plays a part. "The sleeplessness of life with a small child can't be underestimated," she says. "You might still be breastfeeding, you might be sharing a bed with a toddler, you might be holding down a job at the same time. Basically, there's not a lot of sex happening."

Treatment depends on the cause of infertility, but may include counselling, fertility treatments, which include in vitro fertilization. According to ESHRE recommendations, couples with an estimated live birth rate of 40% or higher per year are encouraged to continue aiming for a spontaneous pregnancy.[63] Treatment methods for infertility may be grouped as medical or complementary and alternative treatments. Some methods may be used in concert with other methods. Drugs used for both women and men[64] include clomiphene citrate, human menopausal gonadotropin (hMG), follicle-stimulating hormone (FSH), human chorionic gonadotropin (hCG), gonadotropin-releasing hormone (GnRH) analogues, aromatase inhibitors, and metformin.

Ovulation induction (in the sense of medical treatment aiming for the development of one or two ovulatory follicles) is an alternative for women with anovulation or oligoovulation, since it is less expensive and more easy to control.[7] It generally involves antiestrogens such as clomifene citrate or letrozole, and is followed by natural or artificial insemination.
Medical treatment of infertility generally involves the use of fertility medication, medical device, surgery, or a combination of the following. If the sperm are of good quality and the mechanics of the woman's reproductive structures are good (patent fallopian tubes, no adhesions or scarring), a course of ovulation induction maybe used. The physician or WHNP may also suggest using a conception cap cervical cap, which the patient uses at home by placing the sperm inside the cap and putting the conception device on the cervix, or intrauterine insemination (IUI), in which the doctor or WHNP introduces sperm into the uterus during ovulation, via a catheter. In these methods, fertilization occurs inside the body.

Intrauterine insemination (IUI) is one of the simpler, “low-tech” treatments for infertility and the starting point for many individuals and couples who are having difficulty with conception on their own. Patients who have been diagnosed with unexplained infertility, mild male factor infertility, a cervical factor, or irregular or absent ovulation are often good candidates for IUI.
With egg donation and IVF, women who are past their reproductive years, have infertile male partners, have idiopathic female-fertility issues, or have reached menopause can still become pregnant. After the IVF treatment, some couples get pregnant without any fertility treatments.[3] In 2018, it was estimated that eight million children had been born worldwide using IVF and other assisted reproduction techniques.[4] However, a recent study that explores 10 adjuncts with IVF (screening hysteroscopy, DHEA, testosterone, GH, aspirin, heparin, antioxidants in males and females, seminal plasma, and PRP) suggests that until more evidence is done to show that these adjuncts are safe and effective, they should be avoided.[5]

There are multiple treatment options including using oral or injectable medications, intrauterine insemination (IUI), assisted reproductive technology using in vitro fertilization (IVF), or a combo of these solutions to help. A 2010 study called the FASTT trial indicated that in vitro fertilization might be the quickest and best route to pregnancy for couples with unexplained infertility.(4)


Though there are some risk with older women pregnancies, there are some benefits associated with caesareans. A study has shown that births over 40 have a lower rate of birth trauma due to increased delivery by caesarean. Though caesarean is seen to benefit mothers over 40, there are still many risk factors to consider. Caesarean section may be a risk in the same way that gestational diabetes is.
Any embryos that you do not use in your first IVF attempt can be frozen for later use. This will save you money if you undergo IVF a second or third time. If you do not want your leftover embryos, you may donate them to another infertile couple, or you and your partner can ask the clinic to destroy the embryos. Both you and your partner must agree before the clinic will destroy or donate your embryos.
The cost of an IUI is almost certainly less on a per cycle basis, but because IVF has much higher success rates and IUI is a poor option for some, the higher per cycle cost of IVF can actually be more affordable in the long run – in terms of the cost to bring home a baby.  Because most successful IUIs happen in the first three or four-cycle, it eventually becomes very expensive to bring home a baby with an IUI.
However, those percentages are from studies in which all the women had laparoscopy surgery to investigate the pelvic cavity for pelvic scarring and endometriosis. Laparoscopy surgery is no longer done as part of the routine fertility workup. Therefore, we are not finding all of the causes of infertility that we used to - leaving many more couples in the unexplained category.
Step on the scale. Have you put on some extra pounds since your last baby was on board? Or maybe you’ve lost a lot of weight (because after all, who has time to eat when you’re running after a little one)? Your weight can impact your fertility, so getting as close as possible to a healthy BMI can also help get you closer to that second pregnancy you’re hoping for.
The likelihood of a diagnosis of unexplained infertility is increased substantially in women 35 and over - and greatly increased in women over 38. The reason for this is that there are more likely to be egg quantity and quality problems as women age. Since we do not have a "standard category" called egg factor infertility, these couples sometimes get lumped in to the "unexplained" infertility category.
It is possible that a significant contributor to unexplained infertility can be attributed to changes in sperm epigenetics. Methylation patterns in sperm DNA which affect the expression of various genes may be the missing link for this unique patient population. By employing epigenetic analysis, we may be able to identify more causes of infertility and suggest the optimal course of therapy. Preliminary evidence even suggests that these epigenetic signatures influence the probability of conception, embryogenesis, and successful carrying of pregnancy to term. Future research on sperm epigenetics holds the promise of revolutionizing reproductive medicine and empowering patients in the process.
Federal regulations in the United States include screening requirements and restrictions on donations, but generally do not affect sexually intimate partners.[185] However, doctors may be required to provide treatments due to nondiscrimination laws, as for example in California.[114] The US state of Tennessee proposed a bill in 2009 that would have defined donor IVF as adoption.[186] During the same session another bill proposed barring adoption from any unmarried and cohabitating couple, and activist groups stated that passing the first bill would effectively stop unmarried people from using IVF.[187][188] Neither of these bills passed.[189]
During the second half of your menstrual cycle, the hormone progesterone kicks in to help prepare the lining of your uterus for a fertilized egg. If the egg isn't fertilized and doesn't implant, it disintegrates, progesterone levels fall, and about 12 to 16 days later, the egg -- along with blood and tissues from the lining of the uterus -- is shed from the body. That process is menstruation. It usually lasts 3 to 7 days.
Next, we’ll look at data that compares PCOS patients who took clomid alone or clomid accompanied by IUI (no studies use letrozole, so we are forced to use a study with clomid). Clomid alone produced a 17% live birth rate after 3 cycles, while clomid plus IUI produced a 19% live birth rate. Investigators concluded there was no statistically significant difference.
Treatment depends on the cause of infertility, but may include counselling, fertility treatments, which include in vitro fertilization. According to ESHRE recommendations, couples with an estimated live birth rate of 40% or higher per year are encouraged to continue aiming for a spontaneous pregnancy.[63] Treatment methods for infertility may be grouped as medical or complementary and alternative treatments. Some methods may be used in concert with other methods. Drugs used for both women and men[64] include clomiphene citrate, human menopausal gonadotropin (hMG), follicle-stimulating hormone (FSH), human chorionic gonadotropin (hCG), gonadotropin-releasing hormone (GnRH) analogues, aromatase inhibitors, and metformin.

It is possible that a significant contributor to unexplained infertility can be attributed to changes in sperm epigenetics. Methylation patterns in sperm DNA which affect the expression of various genes may be the missing link for this unique patient population. By employing epigenetic analysis, we may be able to identify more causes of infertility and suggest the optimal course of therapy. Preliminary evidence even suggests that these epigenetic signatures influence the probability of conception, embryogenesis, and successful carrying of pregnancy to term. Future research on sperm epigenetics holds the promise of revolutionizing reproductive medicine and empowering patients in the process.
Fertility was found to be a significant factor in a man's perception of his masculinity, driving many to keep the treatment a secret.[139] In cases where the men did share that he and his partner were undergoing IVF, they reported to have been teased, mainly by other men, although some viewed this as an affirmation of support and friendship. For others, this led to feeling socially isolated.[140] In comparison with women, men showed less deterioration in mental health in the years following a failed treatment.[141] However many men did feel guilt, disappointment and inadequacy, stating that they were simply trying to provide an 'emotional rock' for their partners.[140]
Vzhledem k tomu, že vertikální přenos a vliv koronaviru SARS-CoV-2 na graviditu není dostatečně prozkoumán, mezinárodní odborné společnosti doporučují zvážit možná rizika spojená s těhotenstvím v oblastech zasažených onemocněním SARS-CoV-2. Z tohoto důvodu preferuje naše klinika zamražení získaných embryí a odložení transferu. Strategie léčby bude vždy posouzena individuálně ošetřujícím lékařem s ohledem na aktuální situaci v ČR a specifika léčeného páru.

Twenty-eight days is the average length of a menstrual cycle, though anything between 21 and 35 days is considered normal. Fluctuating a little from month to month is one thing, but if your period is so irregular that you don’t even try to track it anymore, it could indicate a problem producing eggs, or ovulating. Ovulation disorders (meaning you ovulate infrequently or not at all) account for infertility in about 25 percent of infertile couples, according to the Mayo Clinic. One of the most common causes of female infertility is polycystic ovarian syndrome (PCOS)—a condition characterized by longer than normal stretches between periods, or even skipping cycles for months in a row. (Get the silent signs of PCOS here.) Irregular periods may also result from excessive physical or emotional stress, which can mess with the hormones responsible for stimulating ovulation each month; being too heavy or too thin, or gaining or losing a lot of weight quickly may also have the same effect. Talk to your doctor; he may be able to prescribe fertility drugs to help induce or stimulate ovulation.

Many people have never heard the term "secondary infertility"; fewer understand it. I discovered it a year into my struggle to conceive a second child and fell on it, amazed. What I was undergoing had a name! I wrote it down and immediately felt better, as if the phrase exuded a talismanic power that might protect me from the likes of my neighbour.
The consequences of infertility are manifold and can include societal repercussions and personal suffering. Advances in assisted reproductive technologies, such as IVF, can offer hope to many couples where treatment is available, although barriers exist in terms of medical coverage and affordability. The medicalization of infertility has unwittingly led to a disregard for the emotional responses that couples experience, which include distress, loss of control, stigmatization, and a disruption in the developmental trajectory of adulthood.[15] One of the main challenges in assessing the distress levels in women with infertility is the accuracy of self-report measures. It is possible that women “fake good” in order to appear mentally healthier than they are. It is also possible that women feel a sense of hopefulness/increased optimism prior to initiating infertility treatment, which is when most assessments of distress are collected. Some early studies concluded that infertile women did not report any significant differences in symptoms of anxiety and depression than fertile women. The further into treatment a patient goes, the more often they display symptoms of depression and anxiety. Patients with one treatment failure had significantly higher levels of anxiety, and patients with two failures experienced more depression when compared with those without a history of treatment. However, it has also been shown that the more depressed the infertile woman, the less likely she is to start infertility treatment and the more likely she is to drop out after only one cycle. Researchers have also shown that despite a good prognosis and having the finances available to pay for treatment, discontinuation is most often due to psychological reasons.[16]
^ Baker VL, Luke B, Brown MB, Alvero R, Frattarelli JL, Usadi R, et al. (September 2010). "Multivariate analysis of factors affecting probability of pregnancy and live birth with in vitro fertilization: an analysis of the Society for Assisted Reproductive Technology Clinic Outcomes Reporting System". Fertility and Sterility. 94 (4): 1410–6. doi:10.1016/j.fertnstert.2009.07.986. PMID 19740463. 
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