Help!! I need thoughts, comments, and concerns please!!!

I am on the birth control pill tri-sentriac i have been on it for 5 or 6 years. I typically take my pills around the same time every night, I’ve never had no issues with the pill. About 3 or so weeks ago i missed 4 or 5 days in a row because the supplier didn’t send it into my pharmacy so the doctor instructed me on how to take it with missing so many day, i did as the doctor was told. Almost a week ago me and my boyfriend had sex and he came inside me on accident (he typically pulls out) . I started bleeding 2 days ago which I’m assuming is my period, i missed my pill 2 days ago and had to double up. So technically speaking I’m all screwed up on my birth control, i know it’s possible but unlikely to have your period and still be pregnant, but what similar experiences have any of you had, what do you think my chances of being pregnant are? Help!? Thanks!