<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have burning during urination, it s been a week now. I cannot achieve an erection unless I really concentrate on it.. Today I came home, showered and went straight to bed and woke up 2 hours later with an erection associated with pain.. What s going on??  <response>: Degree understand your concerns went through your details. I think your problem is psychological rather physiological. You are being obsessive with the pain and erection problem. To be sure, please consult a physician and let him advise you on this regard. 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. 