I have this sore on my penis shaft right below the head, it appeared all of the sudden the other day when I woke up for a nap. It has been about 3 days and there is no change to it. It is red, either flat or slightly raised. It can be slightly moist on the spot most of the time. It is slightly uncomfortable at times(mainly when sleeping) but most of the time don't feel it much. It is not firm. The picture attached make it more red than it seems and it is a little less than a half inch wide. There is only one sore. Any suggestions would be much appreciated. I am currently uninsured and can't afford a visit at the moment. I am 22 years old, and have had sex only once in the past 6 months.