I am on birth control pills. the day after my last sexual encounter with my fiance I was placed on antibiotics by my doctor. How soon does antibiotics make birth control pills less effective? How soon would I be able to tell if I am pregnant?
NOTICE: The information provided on this site is not a substitute for professional medical advice,
diagnosis, or treatment. Never delay or disregard seeking professional medical advice from your
physician or other qualified health provider because of something you have read on Wellsphere.
If you have a medical emergency, call your doctor or 911 immediately.