A member asked:

Can changing tri-sprintec to ortho tricyclen lo (birth control) get me pregnant if i'm having unprotected sex?

A doctor has provided 1 answer

Changing pill brands: Changing pill brands is best done at the end of a pill pack. If it is done at any other time then 2 weeks of back up contraception is advised to minimize failure rate.

Answered 2/11/2014

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