Hey guys, was just hoping for any answers before I visit my Dr. I have noticed a small red patch of what appears to be dried skin on the side of my penis shaft for the last month and a half or so. It doesn't hurt or pus or look like a pimple, it sometimes appears sometimes dry. I have no other marks on me anywhere and no pain when peeing or otherwise. I have been with my current partner for 2 years and have only had unprotected sex with her and a partner I was with over 3 years ago. Just hoping anyone can give me some clarity on the situation? Is this an sti?