Dear Welcome to HCM We understand your concerns I went through your details. First of all you should understand masturbation is a good exercise, healthy, stress buster and not harmful to your body if you are masturbating moderately. You can masturbate three or four times a week. The reason for your night fall (Nocturnal Emission) is lack of means to expel accumulated sperm cells inside your body. Whenever you are sexually aroused, sperm cells are produced and stored inside your body. That is a waste product for your body. If you do not masturbate of engage in sexual activities, body finds its own way to ejaculate the stored waste. The usual means are through night fall or through urine. Therefore, 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.