For 2 years now I've been having problems with my foreskin. The tip of my foreskin has turned white (some spots aren't). But mostly the whole tip is white and can't be stretched at all over the head of my penis. 2 years ago I didn't have this. I could strech my foreskin all the way and be able to wash it but I can't anymore. I Don't know whether it is an STD or not. I do masterbate about 3 times a week.