I noticed about 3 days ago the the head of my penis seemed to be inflamed (for lack of a better word). There is a small half-inch section in the middle that is red and has bumps on the edges of the red area. The bumps are not filled with any types of liquid and are barely noticeable unless inspected closely. They look exactly like goosebumps. The size of the inflamed area has decreased a little in the past two days. There has been no discomfort at all. No itching, burning, or sensation of any kind. It has not spread to any other part of my body and is only located on the section of the penis head. I'm divorced and recently began having my first sexual relationship since my divorce and am using condoms for the first time in over 5 years. I also work outside and have a job where I sweat a lot. I haven't been able to find an STD that presents with the symptoms I described, but I am worried nonetheless. Is this just minor irritation brought on by condoms/sweat, etc? Or could this be something more serious?