Will get pregnant? I’m on the pill.

I’ve been on the pill for 3 months now, and every month I’ve had my period at the same day of the week during my placebo week. I take my pills right every single time. Never missed a pill or had diarrhea or vomited after taking the pill. Never taken antibiotics when I’m on the pill. My bf came in me today and a few times this months just a little bit, but every month i get scared about getting pregnant. Should i be worried? Btw during those 3 months he had came in me and i never got pregnant and received my period at the right day. What do you think? I shouldn’t worry right.