Bleeding after sex: Please help!

So I was wondering...

I just got done with my period like 2 days ago. Today my bf and I had sex (really good sex) and next thing I know his hand is covered in blood, his penis is covered in blood....I was so mortified...😫

He was a super good sport about it. It didn’t gross him out or scare him off, thank god..

I mean the sex was somewhat rough...but has this happened to anyone before?

Is that normal? Was I still menstruating? Does that normally happen when having rough sex?

I am aware of bleeding a tiny bit during or after rough sex...that’s what usually happens to me. But this was kind of a lot..