Maybe not, but...: Plan B can alter the menstrual 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.
Answered 5/3/2015
3k views
Probably not: Plan B is 95% effective if taken within 24 hours after unprotected sex and does cause abnormal bleeding so you are probably not pregnant. To be sure, do a pregnancy test and repeat it in 3-5 days if it is negative. Now is also the time to look into a more reliable method of contraception so you don't have this worry again. Best wishes.
Answered 4/17/2015
2.9k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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