Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. No masturbation will never cause any problem. Pain will not be felt while doing masturbation. But you can feel some short of contraction feeling after masturbation. So in my advice you should be physically examined by nearby doctors. Once examined cause of the problem can be ascertain and can be managed accordingly. You can continue the masturbation right now but can show the problem to the nearby doctors once. Please avoid vigorous masturbation as it will injure the private part. Please do the practice with clean hand. Unhygienic hand can cause problem of infections. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.