I take birth control everyday and this past week i was on antibiotics, which i know make your birth control very ineffective. I took an antibiotic Friday but forgot Saturday and had sex that night. I used back up contraceptive and the condom broke. I took a plan b the next morning because i was scared and afraid that my birth control wouldn't cover me. I have one more day left in my pack, should i take it then go off birth control for a month? I know Plan B and birth control is a crazy amount of hormones your body isn't meant to handle.