No period, on pill

bella

I’ve been on a low hormone birth control for a few years now and I’ve switched a few brands and found one I liked about a year or two ago and stuck with it. Well back in June I stopped getting my period which I know is common on the pill. But then I got my period in November after being prescribed amoxicillin the month previous for dental work. Amoxicillin being an antibiotic I was warned my birth control wouldn’t “work” for about a month. Anyways, I continued to get a period up until this month (February) I was due 2/14. Is this normal? What are your experiences? I’m Very confused.