As many comments as possible please..

Okay; so for a super long time I was scared about being pregnant but then my period came right on time, I was super relieved and then saw my boyfriend the third day of my period. We had anal; I hated it lol. He did not cum near me at all but I'm still scared. Could I have any possibility of getting pregnant from precum on the third day of my period? It was 8 days before my fertile window began. But there was and we have never had vaginal sex. Help!