I have been in a monogamous relationship for the past three years now. About 9 months ago we were having intercourse in the shower which lasted an extended period of time, about an hour. When we were finished I had a real bad friction burn on the left side of my penis, mainly due to the water washing away any natural lubrication. The next morning the blister had 3-4 tiny blisters the size of a pin head that were filled with clear fluid. Minus the friction burn, the tiny blisters were gone within 2-4 days and the burn a few days after that. A few months later after another episode of some rigorous intercourse, this time in bed, I develop a small patch, about 1/4 the size of a dime, of irritated skin and the next morning 2-4 tiny water-blisters, size of pin heads filled with clear fluids formed on this irritated area. The irritated area was the exact same spot as the last time. The skin looked dry and flaky with the blisters a little shiny. This time I went my doctor, explained the events, and he said it is not what I think it is, a STD such as Herpes and send me on my way. Now again 3 months later I was masturbating using soap, which got a little dry and the next morning, the same area of skin, where I was circumcised, was red an irritated with 3-4 time water blisters. Same as before, As long as I leave them alone and don't mess with them they are resolved with in 2-4 days. No bleeding or scabbing, they just go down, if I don't bust them, and go away. I have not had any other symptoms relating to any STDs, fever, gland issues, discharge, painful urination, aches pains, etc. The blisters occur the next morning and the red inflamed skin as early as that very evening. Prior this relationship I was in a 16 year relationship and my current partner was also in a 9 year prior relationship. We have both only had one other partner before each other and before we became intimate we were both checked out for diseases. I don't suspect a STD but could it be? Does it sound like one? If this does not appear to be a STD is there a way to prevent this from occurring? It has only occurred 3 times but I would like it to not occur anymore. Why do you think it keeps happening in the same spot, could that one area of skin be overly sensitive now? If the skin is overly sensitive is there a way to return the skin back to a less sensitive state? Could you also provide me some explanation as to why you think is happening and happening now?
Since I am light skinned by doctor said my skin is very sensitive, and in the past typically at the slightest instance of irritation I would stop or use a lubricant. Lately I have not been as disciplined but have not had any problems.