I need advice

Okay so like a month ago me and my boyfriend were fooling around. I was on the second to last day of my period and we didn’t even have sex, we leery just rubbing against each other I guess. But he did have a little bit of pre cum. He’s also been to the doctor and they said he’s 55% infertile. Anyway flow said I was supposed to start my period today and it hasn’t started and I’m super super worried. I really don’t think I’m pregnant but I just need some more advice:) what do you it’s think.