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how long does it take for birth control to be effective?
i take the 28 day ORTHO-CYCLEN...i am a sunday starter but i got my period last sunday so i started the day i got it (if that matters) i've heard it takes effect the day you i've also heard it takes 7-14 days and i also heard it takes a month...
1 Answer
- SusiecatLv 71 decade agoFavorite Answer
Usually, it is best to wait 3 or 4 weeks.
There are varied viewpoints on this subject.
Some of the newer pills are supposed to be effective sooner.
But, to be absolutely sure, wait at least 3 weeks.
And use supplemental B.C.
