I poured hydrogen peroxide on my penis and have been left with a severe burning sensation when I urinate. In addition to this, I have random small bumps, some on the head, some on the staff of my penis. They aren t clustered and there s only about four. They, within a day, went from bumps to holes, for lack of a better word. Could this be relevant to the peroxide, or should I be concerned about having an STD? Any help would be highly appreciated.