My age 25 age and 2 months my problem is penis is very small. It s only 4 inch in full erection. I'm masturbating from age 15 I masturbate 5 time in a week. For last one year my sexual desire decrease gradually and now it is very less. My facial hair a very less. And it is not growing fast. And my voice is not deepening like male voice. And my body weight is decreasing. I'm eating normally but i'm getting very lean. Pls send suggest a solution.