There are many factors that may impact a couple’s ability to conceive and one of these maybe incorrect timing of intercourse. Conception is only possible from approximately five days before, or up to several hours after ovulation. In the woman, the fertile period is around the 14 th or 15 th day of menstrual cycle, when ovulation is known to occur. The menstrual cycle days are calculated, by taking the first day of period as Day 1
Timed intercourse (TI)is best for treating unexplained infertility or ovulatory disorders where ovulation does not occur normally or regularly. In our units, if the semen test is normal and if the ultrasound and hormone test in the woman (AMH, TSH& PRL) are normal, we offer few months (or cycles) of Timed Intercourse (TI)to the couple. In this we give the woman a mild medicine called Clomiphene or letrozole for 5 days, and then monitor the cycle by doing serial vaginal ultrasound starting from Day 2, Day 6, Day 9 and Day 11 of the menstrual cycle. When the leading follicle is about 18 -20 mm in diameter, we give the patient an injection called Human Chorionic Gonadotrophin (HCG). We tell the couple to have sex or normal relations for the next two to three days. With this treatment nearly 20- 30 % patients will become pregnant after three tries or attempts of Timed Intercourse.