<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi i am doing the masturbation from the past 10 years.m doing the masturbation on daily bases. Now m trying to do with my girlfriend but my penis will not get hard to do the sex. please tell me the reason and also let me know is it a serious problem.m 29 years old.  <response>: Degree understand your concerns went through your details. You are masturbating for the last 10 years. That is not a problem at all. Masturbation in moderation is healthy and is a stress buster. Dont worry. Regarding the current sexual experience with your girlfriend, it could be due to simple performance anxiety because you may be doing sex as a starter. Dont worry. Without getting anxious and worried, carry on. Your problem should be solved. Or you may consult a psychologist for counseling. If you require more of my help in this aspect, please use this URL. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck. 