Bloody sexy time 🍆🍑💦

Hi so last night was me and my boyfriend’s Valentine’s Day Celebration since he had to work that Wednesday and I had school.So last night we were having some really good sex,rough of course.And He was ramming Inside me pretty hard,and both of us came so at the end of it,when he pulled out his dick from being done,apparently I was bleeding,I already had my period over a week ago and I’m not late on my birth control pills.I was a lil embarrassed and felt bad and he was so sweet and accommodating and didn’t seem to care at all.So I was wondering what would cause the bleeding?