Unusual bleeding

Sooo me and my guy were messing around tonight and he was fingering me pretty hard and deep (which felt so good) but then I looked down and I was bleeding. I lost my virginity like 4 years ago and have had plenty of sex since so he didn’t “pop my cherry” but I wasn’t sure why I was bleeding it stopped after we calmed down, then happened again the next time he fingered me (same night) so we just decided to calm down and watch a movie. Any thoughts?