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A member asked:
How effective is plan b after taken it 2 days later and 2-3 days after conception?
A doctor has provided 1 answer
50-60%: I am assuming that you are saying 2-3 days after ovulation, right? If you've conceived already, Plan B won't affect a fertilized egg and will not harm a developing fertilized egg. 48 hours after unprotected sex, your chances of preventing pregnancy is around 50-60%.
Answered 6/30/2014
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