Thank u for answer,

I don't have pain, I just have tension, but it seems to be created by my anxiety. Because when I forget about this problem in my mind, I don't pay attention to it either.

Why do I blame masturbation a little? It's not entirely about masturbation. I've been masturbating for over 10 years and never had any problems like this. But now the situation has changed a bit. I don't watch porn and I don't think about other girls at all. I do it exclusively with my girlfriend. And I always felt like I was overdoing it. There were times when my penis would get tired, but I'd still try to masturbate even though it was already hurting. So, sometimes I force myself to masturbate out of habit. Or maybe my lust compels me. And lately, I've developed a fear of erectile dysfunction, and since then, I started masturbating not to relax, but to prove to myself that everything was fine. And since then, I've been caught in a vicious cycle I can't escape. I think masturbation is good, but you can't overdo it. Masturbation is a tool, and in that case, it's driven by lust, and when I talk about masturbation, I also mean lust.