I am 24 yrs guy. I am doing musterburate during last 12 yrs. In first stage I used to do it once in two or three days but during lasttwo and half yrs I used to do it 2 or 3 times in a day. The size of my penis is 3.2 inch. Now I am tensed to get married. My penis is thick in excited state and I already mention the size(3.2 inch). I want to increase the size of my penis and the thickness of it. And want to a long time duration of intercourse. Plz help me.I am so much frustrated.For this reason I cannt give attention in any of my work.Plz help me to get dir of this big problem.