I need to rant

Last night my SO and I started having sex then all the sudden he stopped and said "stop your bleeding" hasn't even been a week since my last period ended, I jump up and run to the bathroom out of shame, I wanted to hide in the bathroom and cry because I felt embarrassed and I felt like he was mad at me, I tried avoiding him the rest of the night like cleaning the kitchen and such and he seemed to get mad because I couldn't even look him because I felt like I did something wrong. I know it isn't my fault but I feel like shit about it like I still want to avoid him. Sorry for the rant.