Im 18 years old, and about a week ago found a small pimple-like bump just under the head of my penis. I tried popping it like a pimple but it wasnt filled with puss... nothing came out. A couple days later, I was picking at it (which I know I shouldnt have), but anyways, it came off, but it bled steady for 3 hours. Now, its about 3 milimetres in diameter, pink with a bit of white in colour, and occasionally is glazed with a slightly damp clear liquid. I have not had unprotected sex, so I don'f believe it is sexually transmitted, but any help would be fantastic.