When you know your average menstrual cycle length, you can work out when you ovulate. Ovulation happens about 14 days before your period starts. If your average menstrual cycle is 28 days, you ovulate around day 14, and your most fertile days are days 12, 13 and If your average menstrual cycle is 35 days ovulation happens around day 21 and your most fertile days are days 19,20 and If you have shorter cycles, say 21 days, ovulation happens around day 7 and your most fertile days are days 5, 6 and 7.
FACT A woman can only get pregnant on a few days during her menstrual cycle. Because eggs and sperm only live for a short time: Sperm live for around five days. Eggs can only be fertilised for around 24 hours one day after being released from the ovary. Getting the timing right If you're trying to get pregnant, timing is everything. What are the chances? Having sex as close as possible to the time of ovulation increases the chance of pregnancy.
If she has sex five days before she ovulates, her probability of pregnancy is about 10 percent. When does preconception health begin? How to know you are ovulating Kerry Hampton, a registered nurse and fertility specialist, discusses the importance of fertility awareness, and how to determine your fertile window to improve your chances of conceiving.
Identification and prediction of the fertile window using Natural Cycles. Self-identification of the clinical fertile window and the ovulation period.
Fertility and Sterility, 5 , Optimizing natural fertility: a committee opinion. Fertility and Sterility, 1 , Revisiting the fertile window. Timing intercourse to achieve pregnancy: current evidence. Obstetrics and Gynecology, 6 , This is called your fertile window. Use the calculator to see which days you are most likely to be fertile. If your period starts:. If your menstrual cycle is:. Your estimated fertile window is:. Your estimated ovulation date is:.
Hunter IVF. Search form Search. When am I most fertile? When does conception take place? How long should I try for, before seeking specialist advice?
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