A 18-year-old female asked:
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did i miss my period because i took plan b a few weeks ago and started birth control last week? took 2 pregnancy tests, both negative.

1 doctor answer
Dr. Bryan Kurtz
A Verified Doctor answered
A US doctor answered Learn more
Probably: Yes, emergency contraception can disrupt you cycle. If your test is negative, you're not likely pregnant. Things should normalize over the next month. You might want to consider birth control, however.
Answered on May 19, 2014

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