Dear
Welcome to HCM
We understand your concerns
I went through your details.
Masturbation is not unhealthy at all. But if you do masturbation in excess, it could make you tired for other activities like education, work etc because masturbation consumes energy. After the age of 20, you can masturbate thrice or four times a week. Engage yourself in exercise, games, entertainment, education and career to divert.
You do not loose sperm because of masturbation. Sperm will be produced in your body whenever you are sexually aroused and healthy. It can happen even at the age of 80 if you are healthy. Masturbation cannot harm your sexual married life. But
anxiety associated with masturbation can. So, don't be anxious.
If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible.
Hope this answers your query. Available for further clarifications.
Good luck. Take care.