I masturbate daily and I don't use lotion or lubrication when I practice this activity. Lately, I've notice an unusual area on my shaft where the webbed part between my thumb and index finger would be when I hold my penis to masturbate. It was a different color(pinkish), to suggest excessive rubbing. It area would scab up after a day but I would still continue to masturbate because it doesn't hurt. Well, I had sex(unprotected) and during intercourse there was some stinging from the area, when checked, the scab was gone but there was a tiny cut there from the friction of her getting dry and me still pumping and pulling on the skin. Do I need to worry about this or is this just excessive dry masturbation with no recovery time to heal which caused the tiny cut? Remind you, there aren't ANY symptoms of an STD we both were checked and clean clinically prior to sex.