sex question

ok so my boyfriend and i were in his room and he was fingering me (this wasn’t the first time for him doing this) but anyways after we were done i went to the bathroom and saw that there was a little bit of blood in my underwear at first i thought i had just started my period but after i went pee when i wipes there was no more blood. 🤔 so now i’m kinda confused what that was ? was that my cherry being popped or what ?? (no hate please)