Dumb Q...but pregnant?

I’m asking this because I just want to educate myself more about sex, please do t judge me haha!😊

My bf and I were messing around and I gave him a BJ, but he didn’t cum. I then kissed & made out with him on the lips for 30 seconds, and he proceeded to go down on me, right after kissing me after I sucked him.

He performed oral on me, and i was worried that there would be a 1/10000 chance of pregnancy , even thought I know he did not cum. I got my period 2 weeks later anyways, and i’m currently ovulating.

I was just wondering if in this case, if I could be pregnant while still having period like bleeding (I heard many stories about women still bleeding even when they’re pregnant!!). I know we didn’t have sex but it was wondering if any precum would have been able to transfer from my mouth to his mouth to his mouth onto my vagina??

Thank you so much for answering and reading this!💓