Possibly pregnant?

I’m a day late. I’m in the birth control patch and I’ve had period symptoms for a week. (Sore boobs for a couple days, cramping for a week). I used my birth control correctly but my bf and I do not use condoms and he always pulls out. Is there a reason why it might be late or is their a slim chance I could be pregnant? I always get paranoid about this? Any advice and experiences would be great!