I have a small bump on the head of my penis around the edge before it goes to the shaft, it s like on the ring. When i go to pop it a small seed like thing comes out. It doesn t hurt, and the only time I really notice it is when I have an erection , and thats really the only time I can pop it out. And the seed always comes back in the same spot. What is it? I m 22 years old, obviously male, no real medical history , only had sex with one girl but I remember these from before