Not sure: I'm not sure that sexual activity will change a woman's menstrual cycle per se. That being said, menstrual cycles change all the time, for a variety of reasons- nutrition, stress, illness, medications, etc. Always use condoms and effective birth control if pregnancy is not desired at this time.
Answered 4/30/2014
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4 doctors weighed in across 2 answers
4 doctors weighed in across 2 answers
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