Ummmm

Ugh, this is a bit weird but just wanted to know if any one has the same problem... My boyfriend and I sometimes have a very rough foreplay, sex is okay, but I am talking about foreplay and I end up having bruises in my breast area and recently i had like 50 little bruises on my hip/butt area... The biggest problem is that I really don’t mind it when we are doing it, nothing hurts but now I am wondering is this really normal...the fact that I wasn’t awared of bruises in my hip/butt area until my mom saw them while I was walking around the house in panties and sweater...she panicked and I had to lie...