So I forgot to take my last pill of the pack which was the last day of my period on Saturday night.I had sex Friday night and then again Sunday morning and then forgot to start the new pack until Monday morning when I was supposed to take it Sunday night. I’ve been on bc for over a year and it is the first time I can remember not taking it within an. Hour or so that I normally take it. I was also on an antibiotic and was told that may cancel out my bc for a month. Should I be worried?