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A 26-year-old female asked:

Does having protected sex a few days before my period make it come late? did it on 24th, period suppose to be here on 28th/29th, it's still not here.

1 doctor answer6 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
No: Having sex 5 to 6 days prior to anticipated period should not make it late. Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, hormone irregularities, drug use, meds (i.e., birth control) or medical problems.

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Last updated Jan 3, 2016

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