After about 2 weeks of having unprotected vaginal sex with an ex, I noticed a reddish fleshy colored mark on the right side of my penis head. It does NOT HURT OR BURN OR ITCH. I wouldnt even know it was there if I couldnt see it. It is nearly flat as well. It has a waxy look to it. It is about half the size of a pea, maybe a little smaller. I NEED IMMEDIATE INPUT ON THIS. I have had it for about a few weeks. It is not getting any worse that I can tell. At one point in time, it seemed to be almost gone, then I masturbated and it got worse, im guessing from irritation. What can this be? It also seems to look much worse/darken when my penis is erect. DONT TELL ME TO GO GET CHECKED, IM ON THAT. I want input now on what it could possibly be. No pictures of any stds I goodled looked anythign close to this. It looks mild, not nasty, not an open sore. But its apparently there.