i just noticed some sort of bump on the top portion of my penis near the base... right over my huge vein on the top... i can position the skin so it doesn't appear to be attached to the vein... its a dark red color... take the tip of your pinky, and squeeze it hard... its about that size and color... i tried popping it, and a little blood comes out, but something more must be in there... it feels like a knot and is very sensitive, not more than a regular pimple though... hurts when squeezed... its rather uncomfortable when my underwear brushes it... i know ur gonna tell me to wait it out, and see a physician... but i was wondering if you could list off some possibilities so i can research those further??? thanks doc