So I'm guessing I'm overreacting, but I want to make sure to hear that I am from other people before I rest easy. So a little less than a week ago after sex with my girlfriend of 2.5 years I noticed a single red bump on the tip of my penis. Generally she has a lot of moisture issues because of medications, so there is often irritation as a result of this, but never in this spot and never as a small bump (roughly the size of a ball point pen tip). I don't know if the bump was there before we had sex or only appeared after, but I only noticed it after. I went to see my doctor a couple days later and he took a look and pointed out that it was a little red in the general area but that there weren't any other bumps or sores, that there was no swelling in my glands, no pain during urination, and that I had nothing to worry about. He didn't take a sample, but didn't appear as though he felt there was a need to either. I'm only concerned because it's a few days later (Wednesday night I first spotted it, Friday I went to the docs, now Monday it's still there) and there's no test saying it's not herpes, just that my doctor assured me that it wasn't. Am I overreacting, should I go in and ask for a test or rest easy knowing that a medical professional has looked it over and determined that it's not herpes?