A member asked:

My periods get late by 15-20 days when i have sexual intercourse. however, in months when i don't have sex, my periods come on time. what is reason?

A doctor has provided 1 answer
Dr. Lori Semel answered

Specializes in Pediatrics

Unknown: Having sexual intercourse does not in itself cause a change in your cycle. However, perhaps it is the stress of thinking you might be pregnant?

Answered 8/17/2014

3.8k views

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