I have a blister/a small leision on my scrotum. The last time I had any kind of sexual activity was about 8 months ago when I received oral sex from a girl. One week ago, I also had another small leision on another part of my scrotum that has since healed. It seems that it heals after 3-4 days and then it appears again. It is so tiny that you have to squint to see it or run your finger over the area to feel it. It is only one that appears every time, never multiple leisions/warts/staph. Could it be staph? It hasn't spread to any other parts of my genitals - it has only appeared on the underside of the scrotum on the right half and always around the same general area. This isn't a symptom of an STD is it? It looks nothing like genital warts or herpes or any HIV-related symptoms (at least I think) because the warts or sores or leisions in those cases look much, much bigger than what I have. I can show you pictures if you need more clarification. I have compared it to pictures of other std symptoms on the Internet and it doesn't look anywhere near as bad as the pictures I found online. I suppose I need some assurance/closure that I don't have anything serious. Can any of you help?