Does taking prednisone as well as penicillin while on birth control increase your risk of becoming pregnant?
I don't know about Prednisone, but antibiotics lowers the
effectiveness of birth control pills. It is much easier to get
pregnant on the pill if you are taking antibioitics. You need to
use a back up method for sex while taking antibiotics. I'm not sure
about Prednisone, but you should talk to your doctor and find out
what effect it has on birth control.