Am I overreacting??

I accidentally deleted my previous post😂...My period is about 16 days late. I haven’t had sex ever because I’m just not ready but My bf and I have done oral, he fingered me weeks ago. Swears nothing was on his fingers or anything . Can I get pregnant from that? My periods tend to be irregular but I’m still stressing about it and so fearful semen got in me when I was moving off of him or something like that and it’s just really stressing me out