Menstruation after sex After menstruation ends, it's essential to keep track of your cycle to determine when you might be entering your fertile window. Therefore, there is a reason to believe that regular sex can help normalize menstrual cycles. If fertilized, the egg will implant in the uterus 6-12 days later. Although sexual activity may temporarily affect the body's hormones, it does not have a direct impact on the timing of your menstrual cycle. To get your menstrual cycle length, count the number of days between 2 of your period. Let's journey into the fascinating world of your body's monthly rhythm and uncover how sex could potentially lead to some unexpected menstrual cycle changes. Dec 1, 2017 ยท In fact, right after your period you may be even more likely to get pregnant from unprotected sex because you’ve just started a new menstrual cycle and you could start ovulating at any point. Thus, having sex right after periods ends won't likely result in pregnancy. If you do not know when your next period is due, then do the test at least 10 days after you have unprotected sex. Next Steps and Useful Resources The changes and challenges of middle-aged women . tucndxzcgbvykweincqflnuuaxqwqpmetosxyqpzadvtqstcvwjambjbegziudeww