Less than two weeks ago I started having unprotected oral/vaginal/anal sex with my girlfriend. We used a non-toxic flavored lube, which is something I've never used before. I have been developing sores around the base of my penis between the shaft and scrotum. (I have 6 now - they are very tiny-about the diameter of the ink refill in a standard Bic ballpoint pen). They are in no way painful. They aren't blisters or anything like that, just a small round area where it looks as if the skin has been rubbed raw. I'm getting somewhat concerned because we haven't had sex the past couple days but I have still been getting more of these sores. Is it possible that I could have gotten an STD and for the symptoms to be evident this quickly? When I noticed the first sore it was a week and a day after the first time we had sex. I haven't been sexually active for 7 months until last week. Could that be the cause? Could it be some sort of reaction to the lube? Or is it definitely and STD?