A member asked:

My period finished last week friday but started again yesterday. however i was sexually active last week saturday and took the morning after pill.

A doctor has provided 1 answer

It happens sometimes: Taking Plan B or other emergency contraception pills can alter the timing or the quality of the current menstrual cycle and the upcoming cycle. One should check a urine pregnancy 3 weeks after taking Plan B, because Plan B works most of the time but not all of the time.

Answered 2/23/2016

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