Whenever I masturbate and semen is left on my stomach, I get red spots on my stomach that DO NOT GO AWAY. They show no signs of going away, fading etc. I also have them on my armpits and neck, no idea how they got there, it's very embarrassing. But they are certainly caused by the semen. They do not itch or burn.
I'm getting really desperate to get rid of them. I tried 'shaving' off the skin with a knife, but that just resulted in getting raw skin, blood and then scabs. I really need help on how to get rid of them.