I have a small black spot on the head of my penis, it just showed up out of nowhere and is a little big raised, I thought it was a tiny scad and I picked it but it wast ad ut hurts to touch, I would say its th me size of a grain of sand, it won't go away and I have not had sex so it can't be a std, I'm almost sure it's not a freckle it is a dark black color and is raised a little