A 22-year-old female asked:
First month of junel fe 1/20, on the last active pill day had unprotected sex. took plan b the next day and haven't gotten my period 4 days later. ?
1 doctor answer • 3 doctors weighed in
Dr. Robert Kwokanswered
Pediatrics 35 years experience
About Plan B...: Plan B can alter the menstrual-type bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because Plan B works most of the time, but not all the time.
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Last updated Dec 26, 2015
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