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-BC- Effective in 7 days or 1 month?

I did a Sunday start of Yaz birth control. Some sources say it takes at least 7 days to be effective in pregnancy prevention, and other sources say 1 month. I have been taking it for 2 1/2 weeks now, and had unprotected sex last night. Which source is right? Am I protected? I know there is still a chance, and Ill take a test next week when Im supposed to get my period.


Asked by Anonymous at 10:54 AM on Jun. 2, 2010 in Health

This question is closed.
Answers (1)
  • I thought it was 1 full cycle, so 1 month.

    Answer by Pnukey at 10:23 PM on Jun. 2, 2010