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.
I conceived my first child, a son, with no trouble at all. When he was two, we thought we might have another. A year or so later, when nothing had happened, we saw a fertility specialist, who gave us every test there was. We passed each one, as the consultant put it, "with flying colours". Which left us relieved but also confounded. All I had was a new adjective to add to my diagnosis: Unexplained Secondary Infertility.
Ovarian hyperstimulation syndrome (OHSS) occurs in 10% of women going through IVF treatment. For most women, symptoms will be mild, and they will recover easily. For a small percentage, OHSS can be more serious and may require hospitalization. Less than 1% of women going through egg retrieval will experience blood clots or kidney failure due to OHSS.
A recent large population-based study collected data from almost 5000 European patients. According to preliminary results presented at the 2019 European Society of Human Reproduction and Embryology, there is no benefit from ICSI in non-male factor cases. Importantly, the study reported no benefit of using ICSI regardless of how many eggs are retrieved after ovarian stimulation. Therefore, having a low oocyte yield should not be a reason for choosing ICSI over IVF.
Stay positive. Search for success stories — there are so many out there. Look within your personal network or support groups to find other women who have similar experiences with infertility. Connect with them and share your stories. Learn what they have done, what doctors they have worked with, and what contributed to their successful pregnancies.
Egg Development – This step is either part of the woman’s natural egg development or stimulated with medications and lasts roughly 5-14 days. Once your follicles are optimal size, a trigger medication may be given to finalize egg maturation and trigger ovulation. This phase of egg development may or may not be accompanied by ultrasound and bloodwork monitoring.
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.
Secondary infertility is the inability to become pregnant or carry a pregnancy to term after you’ve already had a baby, and it's more common than you might think, accounting for about 50 percent of infertility cases. In fact, more couples experience secondary infertility than primary infertility (infertility the first time around). It’s especially common in women who wait until their late 30s or even 40s, when fertility takes a nosedive, to have their second babies.
From the patient experience perspective, IVF is a more time-consuming process overall, although the length of time before pregnancy is achieved varies greatly according to how many cycles are necessary. However, because IVF is a more direct and effective route to pregnancy than IUI, it is often a less time-consuming process. For example, a patient could spend many months trying to succeed at IUI, only to succeed during the first cycle of IVF. While many patients opt for IUI at the start of their fertility journey because it is less invasive and more affordable, success rates for IVF are considerably higher.
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.