Pain in penis forehead with pictures.

Age: 28, Never married, sexually inactive I was addicted to porn since last 2-3 years. I used to masturbate roughly without any lubricant. The penis forehead is now paining in the forehead area. Also it is loosing color and has become colorless near the tip area. Rest of the forehead is red in color. It pains more when erect. When it is erect then touching the forehead has sharp pain. I consulted a doctor before. He told that it will heal automatically and advised to exercise regularly. Since one year I am eating good food and exercising daily and yoga, only masturbate once a month, have left porn entirely, but no effect is there. Pain has reduced but only a little bit. area near the tip is still colorless and is painful to touch when erect. There is no problem in erection. Erection is normal. Please suggest me how to treat this. I am getting depression due to this and feeling worthless. Is there any ointment/cream which can solve the pain. Pictures http://imgur.com/a/86A6n