Bleeding randomly after sex?? Wtf😕

I've been sexually active for about one year now with my bf. I didn't bleed losing my virginity to him last year, and haven't bled at all since. Today he fingered me (no blood yet) and then afterwards I was riding him and it felt a little odd but definitely didn't hurt. I pulled up for a second and the condom was covered in blood. I went and peed immediately and then I made sure it was from my vagina (it was) and I'm so confused. My period isn't due for another 6 days. It's not very heavy and I think it has stopped but I'm not sure. I'm so freaked out, I don't know what the deal is. I'm away at college without my parents. What could this be?? Help😢