I noticed it and I immediately was worried,
I am 13, and I have a lump on the right side (underside and a bit lower down the shaft) of my penis, it's round, somewhat irritated, and it stings a bit if I touch it. It doesn't change if I have an erection or not, but I only noticed it a few minutes ago, the last time I looked it was NOT there, so it happened in less than a day.
It's not connected to the penis, it's connected to the skin, it moves when I move my skin.
I'm really concerned except that it appeared in only a day, I couldn't really figure out what it was and I REALLY need some answers. Like what it may be.