Hi I'm a 16 year old female. I was shaving and noticed this bump that I got some years back due to shaving. It's on the area underneath my navel but before the vulva. It was more swollen than usual so I popped it and pus I guess came out then I really pressed it and the head came off with the hair( I guess it was a pore) then some blood came afterwards but it stopped. Do u hv any idea what the cause could be? And I'm a virgin btw so it can't be an STD.