I'm 15 and I've noticed tiny bumps when my penis is erect and I'm worried, you have to look closely to see them when it's flaccid but not when erect, I masturbate almost everyday once or twice a day, sometimes more. I'm very worried it could be an STD, they don't hurt or itch and only turn pinkish red when I masturbate, there only on the upper shaft and I'm circumcised. I'm a virgin but I've come In contact with girls before just not sex.
Its ok its not an STD there perfectly natural.
HAHA, hey man i know this was over a year ago but its called Pearly Penile Papules, and i have it too, on the shaft and on my head