I have been doing masturbation during last 15 years. Now, my penis is not errected at all and I am unable to marry my girl friend. Not only that but also when I masturbate, ejaculation happens within almost 30 seconds. Day by day the quantity of semen decreasing and it is very less right now. There is a great negetive change with my penis. It has become very smaller and after ejaculation it shrinks instantly.