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A 21-year-old female asked:

had sex . unprotected. he did not ejaculate inside of me. took plan b within 24 hours. chances of pregnancy? also does plan b have side effects?

1 doctor answer2 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Pregnancy unlikely: Plan B (or other emergency contraceptive pills) can alter the menstrual 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 Jul 16, 2015

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