I, (F 21) got bread unsuspectingly by my boyfriend (m 21)

So this morning my boyfriend and I were going through a little spat, being all distant with each other and what not. I said I’d shower and while I was he entered and declared he would join. It didn’t immediately become super sexual buuuuuut soaping up one another lead to heavy petting which just became full on make up fucking. He rubbed his cock against my folds and I just commented how we probably shouldn’t (We’re staying at his moms and my next pack of birth control pills for the start of a new month I forgot to take with me ?) but figured it was fine since I’m on my last days of menstruation so we figured there wouldn’t be a risk but I also asked him to pull out. So he ends up pushing me forward and taking me from behind and he climaxed inside. I was momentarily pissed and was like wtf I literally said pull out and he was like “I know you didn’t want me to.” ?and shit, he’s not really wrong. We have a huge breeding fetish but it’s only really pretend, like we just “pretend” I don’t take birth control. This is more risky though, while rare it’s not IMPOSSIBLE to get pregnant on your period and the fact that I’ll have missed at least one possibly two days worth of pills. Also taking into consideration considering sperm can live inside a vagina for days at a time. Of course if it turns out I’m pregnant it’ll be incredibly stress inducing but the thought of the risk itself? Oof?