Dear Welcome to HCM We understand your concerns I went through your details. Your lack of sexual libido and erectile dysfunction is due to lack of proper sexual education and knowledge. Masturbation is normal, natural and not at all unhealthy. Everyone masturbate including animals. Drops of semen along with urine is a normal process because semen is a waste product and your body automatically throws it out. Night fall also happens because of the same reason. You cannot control it unless you masturbate or indulge in sex regularly. This sort of negative knowledge led you to be anxious in sex matters. Therefore, I suggest you to consult a psychologist for counseling. 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.