No longer w bf.. missed period and scared

I’m only 16 and I need some advice. My bf and I are sexually active & when it comes to having sex my bf and I usually don’t use a condom for first 3-5 minutes and after he used a condom and came in the condom. I know I know there’s always a risk when it comes to unprotected sex.

I’m a day late and minor break outs but usually days before my expected period I would have symptoms. Should I be worried?

Please and ty