I'm having some discomfort in my chest when I masturbate, especially in the middle and left side. It doesn't hurt a lot, just a little, but it's noticeable. At first, I thought it might be because I was overweight, so I lost some weight and now I'm down to 67 kg, but the pain is still there. I even tried stopping for a month, thinking it was because I was doing it too often, like 3-4 times a week, but the pain came back when I started again. I'm a bit embarrassed to talk to my friends or family about this, but is there something else that could be causing it?

dermat opinion for further evaluation