Bleeding after being fingered EVERY TIME

okay so im a bit nervous about this, on Friday my bf was round and we were just being normal, he decided to finger me which hes done so many times before and did it in the same way he has done for like 4ish weeks now?, and i looked down and there was blood on his finger, i bled quite a bit, my period was 4 days ago at the time so I knew it wasnt that, plus it didnt smell of period blood, i wiped myself down after and just hoped it stopped, a few hours later I checked and my underwear was covered, but dried, then on Saturday I saw him again and he tried to finger me again, my friend told me that he probably just "popped my cherry" so i alloeed him to just very slowly, when he went slightly faster, I yet again began to bleed, not much (like barely on his hand and a tiny stain in my underwear) but i told him to pull out.

now to the present, yesterday I saw a slight pinkish kind of blood when i wiped, it was very little but still scared the hell out of me, and today my bf came round, now today is my predicted ovualation day and I was basically thinking with my vagina, so (while I was very wet) i asked my bf to finger me again, now for a while it was okay (we kept checking his finger) and I was very happy, until i look and see just a small bit of blood, now im very scared, he does trim his nails, we do do foreplay, ive never bled before, I find whenever he does finger me though since the bleeding it has felt more "sharp", even though his nails r trimmed and buffed, im very worried and scared, i live with my mom and i really dont want to confess this to her bc shes very strict, but im so nervous and afraid, what do i do??