Anxiety about pep results

A few nights ago I had a hookup session with 2 other guys. HIV status unknown. We didn’t do any anal penetration (but of course my mind is saying well what if you were penetrated but you didn’t know) but from what I remember it was just oral sex. Sucking dick and eating ass. I started pep about 36 hours after. But my mind is still thinking of that night and imagining the worse case scenario. And it’s imagining that even with pep my results will be positive. I don’t know how to shake this anxiety, and I think about the situation all day long and things I could have done differently. Someone who’s been in my shoes and made it on the other side please help.