I have intermittent pain on the right side of my penis. It occurs every 3 minutes or so. It is more like pressure, and the outside of the area is red and feels sore. They are not blisters, just red blotches, not in clumps. The pain only just started up today. I have not had sex with my girlfriend is several weeks. We have been sleeping together for about 5 months. I have had these red spots before, but only since I have been sleeping with her. She has not had a lot of sexual partners, I have only had 4. I do have eczema.