I have a red spot too. It fits the description of yours almost exactly. I had just gotten back from beach vacation for a week, hoping the lack of sex would allow it to heal up. It hasn’t. I have been diligently applying a vitamin E cream on the motherfucker 5-10 times daily. It really sucks because every time I get an erection, the protective layer of skin that my body makes for it ruptures and flakes off. Naturally I do not wish to give up sex for weeks at a time, so it continues to get aggravated. Very slowly though, I feel like the skin is getting stronger or at least more resilient. It is still red and blister-esque due to all the rubbing that sex induces. I’ve been waiting patiently for it to go back to normal and until then I choose not to PE at all. If you are going to a doc about this, please tell me what he asks you to do. I need all the advice I can get for my own red spot. If I make it through this, start PEing again and get really huge, I’ll nickname my dick Jupiter (get it? Red spot.. :( ).