What happens if you take multiple birth control methods at once?

2 methods birth cont: If you use multiple methods of birth control at the same time say the bcp and condoms the failure rate will be significantly less than either method alone. The only reason to consider this method is if you absolutely don't want to be pregnant, and you are concerned about a failure of a single method. If you use barrier contraception you will the chance of a sexually transmitted disease.

Better protection: Many couples use a backup method such as condoms and pills to increase effectiveness and lower risk of stds. Also, it's more effective to use condom for male and spermicide for female.