I need 'Mom' Help 😔

What is the honest to God chance of becoming pregnant without actual vaginal sex?? I was on Day 5/6 of my period and my boyfriend and I had anal with a condom because I usually get anxiety if he doesn't wear one. I had a tampon in the whole time and our genitals did not touch until he had the condom on. My question though is what if there was precum or something on the condom that then got close to my vagina? Or when we were foreplaying before he put the condom on and he would touch himself, then me, but not finger me? Is there a chance? Please help me I need guidance.