Help!!!!

Andria

I just went to the bathroom and I wiped, and found fresh blood, only a drop, but it wasn't period blood, it was as if I have a cut or something down there but I can't find anything?? I'm really concerned I can't find the source of the bleeding, and Im not sure if it was my vagina because I have white discharge right now (pre/post period) and it wouldn't have been straight up blood it would've mixed with the white discharge so I'm confused and worried??