I have this bump on my penis I first discovered it 1 month ago I am 13 and mastrubate often. The bump is on the left side of my penis just below the glans. It doesn't hurt when I touch it and it hard to notice it when I am not erected. I can see it more clearly when I erect and there is no pain and no side effects. Help me?? I don't know if it's a serious problem or not!:confused: :confused: