Red Patch on Penis Glan for 8 Years

Location: Tip of the penis Size: small as a pea How it happened? I was 11 years old and I had discovered masturbation, who knew my downfall would come soon. I usually didn't know anything about masturbation so, I used to get all this wild dreams about different chicks and hump the mattress. One night I went on too far and cut my pens, I don't remember anything else since it was about 10 years ago. I only remember one thing and that's a pea size of my skin pealing away. All these 8 years nothing has changed about the place, it's raw skin and I'm a black guy. My normal penis tip skin is brown and you can see how this makes me feel. It looks raw however healed, when I masturbate too much, the skin becomes dry and it sheds and then it heals back. How it looks like? 1. Raw - light reddish color. 2. It's smooth like other parts of my glan. 3. Only difference between other parts of my glan is the color and sensitivity. How do I know it isn't an STD! 1. I never had sex with anyone. 2. I took an HIV test and it was negative. 3. None of my parents have an STD. How do I know it isn't cancer! 1. I have had this for 8 damn years, if it was cancer it would have already advanced by now. This seems to be my curse, there is no cure and yes I had gone to the doctor however I lied some parts about the story. I told him a zip cut my penis and it's still reddish, however he told me it looks perfectly normal and that your skin color will likely never go back because the skin is damaged. This was a simple GP doctor, he wasn't a specialist. I have never gone to a specialist before... Any of you know what to do? Any of you have the same problem?

Here’s a photo guys… image

Changes in skin pigmentation like this are quite common across the entire body irrespective of what skin colour you actually are. Unfortunately, your pigmentation change has been caused by a trauma to that part of the body, and it stands-out entirely from the darker skin surrounding it - so what the GP has told you will be correct.
I realise because of the culture in which you were raised that you talk about ‘your downfall’ and that this ‘is your curse’ as if you were living-out some natural retribution for your actions as an 11 year old child. Many people, when they were younger experience all kinds of accidental happenings that they have to live through the consequences of for the remainder of their lives. Fortunately, unless they are medical professionals, NO ONE will actually know that you have this - you should not let this unfortunate circumstance pray on your mind and think that you have be damned for the remainder of your life having done this. Move on and move forward - there is no reason why you should not have sexual relations, for example, if you find the right partner and circumstances.