I'm sexually active but have been tested recently and it said I have no stds. was in the shower this morning and when I was cleaning under my foreskin I noticed a bit of pain when I touched a part of the head. After closer examination I saw that there were three lighter colored bump things that are close together so they could be part of the same sore. I masturbate frequently and think maybe that caused it? The sore or bumps dont look like any of the main stream stds Ive googled pictures of. I cant find anything similar. Is it possible that this is nothing to worry about? I'm very worried.