questions: need advice

Alice • sup

I always get worried about messing up on the pill and getting pregnant. I just got off my period and it came early this month, yesterday I took my first inactive pill from my birth control packet and I has sex last night, should I be worried at all? Should I take the morning after pill just to be safe?? I'm pretty regular on my birth control but because I was on my inactive day I'm not sure if I should do anything