A member asked:

My sis took one of my birthcontrol by accident so i took one of hers to be even. different brands. then i started my period. was it likely to happen?

A doctor has provided 1 answer
Dr. Alvin Lin answered

Maybe but it depends: Different brands of birth control pills aren't as important as generic ingredient(s) & dose. If it's same medications & same dose, should be fine. But if it's a multi-phasic pack, then it also depends upon taking pills from same phase. Too many variables to be able to answer accurately with just info you've given.

Answered 7/21/2013

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Thank

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