I am a 18yr old male and i have been masturbating exceesively the last 6months (2-3 times a day!). About 2-3 weeks ago i noticed my penis head was turning brown. I do have skin that covers the penis and at the junction of the penis head the skin the penis head is turning brown. More recently i have noticed a slight color change to purple at the bottom of the head. I AM REALLY WORRIED! I am a virgin, so that rules out STDs. I have also recently noticed small red dots clusterd together at the front middle of the penis head. Can anyone tell me what i can do??? PLEASE, I AM REALLY WORRIED!!!!