I'm confused!

Has this ever happened to anyone else! my bf was fingering me and I don't know if he went a little too rough or something but when he was done and he went to clean his hands, there was a little blood on his fingers. it wasn't a lot, hardly any really but it was there. it wasnt my period and i don't know if it was my hymen breaking or not bc at the time i thought that my hymen had already broke. so has this ever happened to anyone else?