Hello, I ve been having sex with my girlfriend for a while now and about two weeks after we first started having sex I noticed two seperate bunches of what looks to me like blisters on the shaft of my penis. They are very light pink with no irritation or pain or anything except a littl bit of itch when I rub it or something but I can t feel it throughout the day. It does look like cauliflower a little but they are beginning to scab over like a blister so maybe perhaps they are just some type of frictional blisters? My girlfriend shows no symptoms. We have unprotected sex as she is on birth control. I also masturbate sometimes rigorously enough to cause a lesion. I had sex with a different girl unprotected about three weeks prior to my girlfriend and I s first encounter. Is this an std or is it just a blister? They do not look at all pussy or bloody. I ve had these for two weeks.Thank you.