A member asked:

Im worried about posible failure of birth control pill since i had cefalexen a few days after my start for 5th pack. help? sex on 6th&9th of period.

A doctor has provided 1 answer

Chance of failure lo: Certainly the chance of failure is real, but not too high..Nothing you can do about this until next month (and new cycle of pills).

Answered 10/4/2016

4.9k views

Thank

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