A member asked:

Had protected sex on the 4th day of my period the next day i took plan b and a week later got a period for 5 days. next month i didn't get my period?

A doctor has provided 1 answer
Dr. Lori Semel answered

Specializes in Pediatrics

Plan B: The morning after pill can certainly change the menstrual cycle for the next month. If you did not have unprotected sex after the pill, it is unlikely to be a pregnancy. If your period does not arrive for the next cycle, see your Caregiver.

Answered 5/11/2017

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