Birth control pill and precum

Around 11-12 days ago I was taking antibiotics (amoxicillin) I have always been spot on with taking my birth control at the exact same time everyday for over a year now. My birth control is both hormones and I’ve always heard that antibiotics cancel and/or make birth control less effective. I planned on waiting 2 weeks before becoming sexual again, but me and my husband ended up having sex a week after. He pulled out and we did other things to release as much pre cum as possible. Should I be worried about becoming pregnant??