Bleeding but not on period???

The past three times my boyfriend and I have had sex whenever he fingered me I would start bleeding. I’m on birth control and I did skip my most recent cycle with my birth control, could it be that he’s scratching me when he’s in there or maybe the leftover menstrual blood being knocked around? I know most of you can’t give me professional advice, but I just need someone else’s thoughts on this before I freak out about it too much.

Update:

So we’ve concluded that I only bleed when we have sex in a specific position, which happens to be my favorite and most pleasuring position, BUT it is also the position where the depth of penetration causes my cervix to be hit and to bleed, lmaooo. Sad!