When you know your menstrual cycle, you improve your chances of getting pregnant. The first phase starts with the first day of bleeding during your period. Your body releases hormones, like follicle-stimulating hormone (FSH), that make the eggs inside your ovaries grow. Between days 2 and 14, those hormones also help thicken the lining of your uterus to get ready for a fertilized egg. This is called the follicular stage.
This tool is also very useful because it also provides you with an indication of the risk/reward of doing two single embryo transfers, vs using multiple embryos in your first transfer. Using only one embryo at a time when doing IVF pretty much eliminates the risk of having twins, however it can be more expensive doing it this way making it a tough decision for many couples. The SART IVF success rate predictor tool can help you quantify these risks for your personal set of circumstances.
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. 

This chart is US national average data on success rates per IVF cycle by female age for 2014. The dark blue line (triangles) shows pregnancy rates per cycle by age. The orange line (circles) shows live birth rates per cycle by age. The rate of singleton live births per cycle is shown by the light blue line. The difference between "pregnancy" rate and "live birth" rate is due to miscarriages.
This tool is also very useful because it also provides you with an indication of the risk/reward of doing two single embryo transfers, vs using multiple embryos in your first transfer. Using only one embryo at a time when doing IVF pretty much eliminates the risk of having twins, however it can be more expensive doing it this way making it a tough decision for many couples. The SART IVF success rate predictor tool can help you quantify these risks for your personal set of circumstances.
In males with hepatitis B, The Practice Committee of the American Society for Reproductive Medicine advises that sperm washing is not necessary in IVF to prevent transmission, unless the female partner has not been effectively vaccinated.[37][38] In females with hepatitis B, the risk of vertical transmission during IVF is no different from the risk in spontaneous conception.[38] However, there is not enough evidence to say that ICSI procedures are safe in females with hepatitis B in regard to vertical transmission to the offspring.[38]
Our team here at the Center for Human Reproduction has recently developed an infographic explaining one of the most common causes of female infertility: unexplained infertility. This diagnosis is given to 30% of infertility cases and yet, we believe it really is a non-diagnosis. In our clinical experience, with proper testing, up to 90% of unexplained infertility diagnoses can be attributed to treatable causes.
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.
Typically, genetic parents donate the eggs to a fertility clinic or where they are preserved by oocyte cryopreservation or embryo cryopreservation until a carrier is found for them. Typically the process of matching the embryo(s) with the prospective parents is conducted by the agency itself, at which time the clinic transfers ownership of the embryos to the prospective parents.[89]
Some research has found that IVF may raise the risk of some very rare birth defects, but the risk is still relatively low. Research has also found that the use of ICSI with IVF, in certain cases of male infertility, may increase the risk of infertility and some sexual birth defects for male children. This risk, however, is very low (less than 1%).
Injectable medication cycle with IUI: If pregnancy doesn't result from ovulation induction with oral medications, the next step is to use injectable medications. These medications stimulate the ovaries to produce two to four eggs; when combined with IUI, you have an increased possibility of conception. Essentially, the sperm is given more targets to hit. You will come into the office for four to eight monitoring appointments to track egg development and cycle timing.
Obviously, if the same couple decides to have more children at age 38, the chances won't be 25% anymore; it is likely that they are about 10%, which translates into a reduced pregnancy chance. This does not mean the couple has become infertile. Since they weren't absolutely fertile at age 32, it is only logical that their pregnancy chances at 38 are so low.
Antisperm antibodies (ASA) have been considered as infertility cause in around 10–30% of infertile couples.[23] In both men and women, ASA production are directed against surface antigens on sperm, which can interfere with sperm motility and transport through the female reproductive tract, inhibiting capacitation and acrosome reaction, impaired fertilization, influence on the implantation process, and impaired growth and development of the embryo. The antibodies are classified into different groups: There are IgA, IgG and IgM antibodies. They also differ in the location of the spermatozoon they bind on (head, mid piece, tail). Factors contributing to the formation of antisperm antibodies in women are disturbance of normal immunoregulatory mechanisms, infection, violation of the integrity of the mucous membranes, rape and unprotected oral or anal sex. Risk factors for the formation of antisperm antibodies in men include the breakdown of the blood‑testis barrier, trauma and surgery, orchitis, varicocele, infections, prostatitis, testicular cancer, failure of immunosuppression and unprotected receptive anal or oral sex with men.[23][24]
At RMA, once the embryos reach the blastocyst stage, they are tested through a process called Preimplantation Genetic Testing for Aneuploidy (PGT-A), which lets doctors know which embryos have a normal number of chromosomes. While genetically normal embryos are much more likely to lead to pregnancy and healthy babies, the transfer of abnormal embryos will either result in no pregnancy, miscarriage, or an affected baby. While testing is occurring on a small part of the embryos, the embryos themselves are frozen, awaiting a receptive uterus. A large, prospective study performed recently at RMA confirmed that performing an embryo biopsy does not harm the embryo and does not decrease the likelihood of implantation.
We’re not talking about that uncomfortable throb or dull ache that most women are cursed with during their periods—those cramps are your uterus’s way of telling you it’s contracting to expel its lining. For some women, the message comes through more loudly and clearly than others, but it doesn’t compare to the pelvic pain and severe cramping associated with endometriosis. This kind may begin before your period and extend several days into it, it may include your lower back and cause abdominal pain, and it can get worse over time. Endometriosis occurs when tissue that normally lines the inside of your uterus grows in other locations, such as your ovaries, bowel or pelvis. The extra tissue growth (and its’ surgical removal) can cause scarring, it can get in the way of an egg and sperm uniting, and it may also affect the lining of the uterus, disrupting implantation. Approximately one-third to one-half of women with endometriosis have difficulty getting pregnant. Other symptoms include pain during intercourse, urination and bowel movements.  Here are other conditions that cause stomach pain.
In vitro fertilization (IVF) is a treatment for infertility or genetic problems. If IVF is performed to treat infertility, you and your partner might be able to try less-invasive treatment options before attempting IVF, including fertility drugs to increase production of eggs or intrauterine insemination — a procedure in which sperm are placed directly in your uterus near the time of ovulation.
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.
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.

For women, intake of antioxidants (such as N-acetyl-cysteine, melatonin, vitamin A, vitamin C, vitamin E, folic acid, myo-inositol, zinc or selenium) has not been associated with a significantly increased live birth rate or clinical pregnancy rate in IVF according to Cochrane reviews.[30] The review found that oral antioxidants given to men in couples with male factor or unexplained subfertility may improve live birth rates, but more evidence is needed.[30]


1. Changes to Your Menstrual Cycle: This may be an absence of your period, heavier than normal flow or irregular menstrual cycles may be signs of infertility. Consider tracking your menstrual cycle to help you identify patterns or changes early on. This will also be helpful in case you ever seek guidance from a physician, as he or she will inquire about your medical history.
Regarding potential spread of HIV/AIDS, Japan's government prohibited the use of IVF procedures for couples in which both partners are infected with HIV. Despite the fact that the ethics committees previously allowed the Ogikubo, Tokyo Hospital, located in Tokyo, to use IVF for couples with HIV, the Ministry of Health, Labour and Welfare of Japan decided to block the practice. Hideji Hanabusa, the vice president of the Ogikubo Hospital, states that together with his colleagues, he managed to develop a method through which scientists are able to remove HIV from sperm.[39]
Impaired sperm production or function. Below-average sperm concentration, weak movement of sperm (poor mobility), or abnormalities in sperm size and shape can make it difficult for sperm to fertilize an egg. If semen abnormalities are found, your partner might need to see a specialist to determine if there are correctable problems or underlying health concerns.
The Rand Consulting Group has estimated there to be 400,000 frozen embryos in the United States in 2006.[83] The advantage is that patients who fail to conceive may become pregnant using such embryos without having to go through a full IVF cycle. Or, if pregnancy occurred, they could return later for another pregnancy. Spare oocytes or embryos resulting from fertility treatments may be used for oocyte donation or embryo donation to another woman or couple, and embryos may be created, frozen and stored specifically for transfer and donation by using donor eggs and sperm. Also, oocyte cryopreservation can be used for women who are likely to lose their ovarian reserve due to undergoing chemotherapy.[84] 

Spend quality time with your child. In the midst of your infertility problems, you may feel especially upset about shifting your focus from the child you already have to the child you’re longing to have in the future. You may even feel guilty about your inability to give your little one a sibling or about the sadness you are sure is spilling over into her life. The best thing you can do for your child in this situation is to keep life as normal as possible, and ideally, find some quality time to be together. Whether it’s a chat about her day before you tuck her into bed or an afternoon romp in the park, those rituals will go a long way toward keeping your tot’s world stable and happy — even if you sometimes feel your world is spinning out of control. (You might find that focusing on your child lets you live in the moment — at least for a little while — which can help you cope with secondary infertility.) If you’re in a particularly bad place and fear that you may have a hard time handling your true emotions in front of your child (say, your pregnancy test just came up negative for the zillionth time in a row), see if you can arrange to send her to a friend’s house, or enlist your partner or mother-in-law to take over for a bit. Allowing yourself the time to compose yourself can make it much easier to face your little pride and joy with a smile.
IVF: During IVF, medications are usually taken for around 10 days to grow a large number of eggs. Once many eggs have developed, a procedure takes place where the eggs are removed from the ovaries. The eggs are then fertilized outside of the body in a lab. After growing for a few days in the lab, an embryo is transferred back into the woman’s uterus. 
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.
In the UK, previous NICE guidelines defined infertility as failure to conceive after regular unprotected sexual intercourse for two years in the absence of known reproductive pathology.[11] Updated NICE guidelines do not include a specific definition, but recommend that "A woman of reproductive age who has not conceived after 1 year of unprotected vaginal sexual intercourse, in the absence of any known cause of infertility, should be offered further clinical assessment and investigation along with her partner, with earlier referral to a specialist if the woman is over 36 years of age."[12]
Most women over 40 who try to get pregnant will have difficulty, and fertility over age 44 is rare - even in women who are ovulating regularly every month. The point is that the older the female partner, the more likely that there is an egg related issue causing the fertility problem. Unfortunately, there is currently no specific test for "egg quality".

Infertility is a medical condition, and a fertility specialist can help with thorough, focused examinations directed at discovering the underlying cause. For every couple that begins an evaluation, about 35% discover that there is an issue with the man which is contributing to the couple’s infertility. 50% is related to female factor while 5% is due to rare causes. The remaining 10% (1 in 5 couples) is due to unexplained infertility despite completing a full infertility work-up.(2)
In IUI, this natural sequence of events is given some assistance. A sample of sperm is prepared in the laboratory so that only the best moving sperm are concentrated together. This sperm is then deposited directly into the uterus without having to swim there on its own, which can be challenging, especially if the sperm do not swim well. IUI places a higher concentration of moving sperm closer to the ovulated egg. Often a woman will have taken medication prior to the IUI procedure to ensure she will ovulate around the time of the procedure, so egg and sperm can meet.
^ 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.
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.

Alana Stewart, who was conceived using donor sperm, began an online forum for donor children called AnonymousUS in 2010. The forum welcomes the viewpoints of anyone involved in the IVF process.[121] Olivia Pratten, a donor-conceived Canadian, sued the province of British Columbia for access to records on her donor father's identity in 2008.[122] "I'm not a treatment, I'm a person, and those records belong to me," Pratten said.[119] In May 2012, a court ruled in Pratten's favour, agreeing that the laws at the time discriminated against donor children and making anonymous sperm and egg donation in British Columbia illegal.[122]
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.

Intercourse must take place frequently, particularly before and around the time of ovulation, and the couple must have been trying to conceive for at least one year (6 months if the woman is over 35 years old). Using these criteria, about 10-20% of all infertile couples have unexplained infertility. However, the percentage of couples classified as having unexplained infertility will depend upon the thoroughness of testing and the sophistication of medical technology. 
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Sit down with your partner and make a "fertility road map" that outlines what you're willing to try and for approximately how long, suggests Dr. Davidson. "Would you do in vitro fertilization? Would you consider an egg donor? How much money can you spend on treatment? Then build in a timeline," she says. "When you at least loosely define a time frame, dealing with infertility doesn't feel like an endless void."
Progesterone elevation on the day of induction of final maturation is associated with lower pregnancy rates in IVF cycles in women undergoing ovarian stimulation using GnRH analogues and gonadotrophins.[23] At this time, compared to a progesterone level below 0.8 ng/ml, a level between 0.8 and 1.1 ng/ml confers an odds ratio of pregnancy of approximately 0.8, and a level between 1.2 and 3.0 ng/ml confers an odds ratio of pregnancy of between 0.6 and 0.7.[23] On the other hand, progesterone elevation does not seem to confer a decreased chance of pregnancy in frozen–thawed cycles and cycles with egg donation.[23]
Embryos are transferred to the uterus. Embryos that have developed from the fertilization process will be placed in the uterus, normally 3 to 5 days after retrieval, so that they can embed. If this process is successful, pregnancy will occur and IVF is considered a success. If it’s not, you may use a frozen embryo that you have saved from a previous round of IVF to try again.
The first step in finding the right treatment is to find out if there is an actual cause for unexplained infertility. Taking treatment helps to increase the chances of conceiving, and also makes it likelier that you will get pregnant sooner. The treatment of luteal-phase defects is as controversial as the diagnosis. They can be treated by using clomiphene, which may help by augmenting the secretion of FSH and thus improving the quality of the follicle (and therefore, the corpus luteum, which develops from it). Direct treatment with progesterone can also help luteal-phase abnormalities. Progesterone can be given either as injections or vaginal suppositories.
A surge in LH triggers your ovaries to release an egg. The surge usually happens 36 hours before the egg is released. Ovulation kits check LH levels in your urine to help you pinpoint the day of ovulation. These kits, which you can buy at the drugstore, are convenient and highly accurate. You may want to test 1-2 days before you expect the surge so you can note the rise in LH.
There’s an intense emotional response to hearing, “There is no apparent reason for your infertility”. It can be difficult, maddening and equally frustrating for both you and your partner. People who do find out a specific cause find their situations difficult, too, of course, but knowing the “whys” makes it more bearable. In cases of unexplained infertility, couples feel that one reason, one cause is lurking in a shadowy corner. It just hasn’t been uncovered yet.

The first step in finding the right treatment is to find out if there is an actual cause for unexplained infertility. Taking treatment helps to increase the chances of conceiving, and also makes it likelier that you will get pregnant sooner. The treatment of luteal-phase defects is as controversial as the diagnosis. They can be treated by using clomiphene, which may help by augmenting the secretion of FSH and thus improving the quality of the follicle (and therefore, the corpus luteum, which develops from it). Direct treatment with progesterone can also help luteal-phase abnormalities. Progesterone can be given either as injections or vaginal suppositories.
iui versus ivf : While approaching an IVF specialist in order to conceive baby, infertile couples come across several options through which they can achieve their goal. These include IUI, IVF and surrogacy. People wishing to carry their child and avoid using a surrogate get to choose between IVF and IUI. But here comes the big dilemma which procedure to choose?
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]
Of course, if you have a history of infertility or any factors that might impede fertility, it makes sense to arm yourself with the right help right from the start. Once you make that appointment with a fertility specialist, you and your doctor will follow the same treatment plan that would be put into place if you were dealing with primary infertility.

Progesterone elevation on the day of induction of final maturation is associated with lower pregnancy rates in IVF cycles in women undergoing ovarian stimulation using GnRH analogues and gonadotrophins.[23] At this time, compared to a progesterone level below 0.8 ng/ml, a level between 0.8 and 1.1 ng/ml confers an odds ratio of pregnancy of approximately 0.8, and a level between 1.2 and 3.0 ng/ml confers an odds ratio of pregnancy of between 0.6 and 0.7.[23] On the other hand, progesterone elevation does not seem to confer a decreased chance of pregnancy in frozen–thawed cycles and cycles with egg donation.[23]
Treatment with Clomid tablets plus IUI improves fertility rates. For unexplained infertility, studies have shown that for women under 35, monthly success rates for Clomid plus insemination are about 10% per cycle. This pregnancy rate holds up for about 3 tries and the success rate is considerably lower after that. More about success rates with IUIs is on the insemination page and on the Clomid for unexplained infertility page. The insemination component boosts fertility more than the Clomid does - but success rates are higher when both are used together.
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