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A member asked:
How soon does birth control pill start being effective if you start first day after next period?
A doctor has provided 1 answer
Birth control works: If you start your pills on day 1after your period, your pills should be effective almost immediately. You will certainly be protected by the time you would have ovulated if youmweren't taking pills (approximately 2weeks after your period begins).
Answered 12/19/2014
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