Hello, I have two red spots on my penis shaft that I noticed while masturbating. They are red, about 1-5 mm in size, one of them is shiny around the middle, and are numb during masturbation. They do not hurt and do not exude and pus or liquids. I noticed last week and thought they were simply slightly irritated spots on the skin but have not gone away. I notice that the center has a slightly colored cover which I can peel off occassionally. There are no discharges and there is no other effect (no itching, burning, etc. caused by some STDs I know of).