Can you conceive immediately after menstruation?

While it is possible to conceive immediately after menstruation, the chances are lower than at other times during the menstrual cycle. The most fertile time of a woman's cycle is the ovulation window, which typically occurs 14 days before the start of the next period. This means that it is possible to conceive if you have unprotected sex in the days leading up to ovulation, even if you have just finished menstruating.