Hello, Stopping of the regular masturbation without any sexual acts can cause congestion of the prostate and thus pain in abdomen and urinary symptoms. Unable to sit without any back support for a long time can be due to back problem primarily due to any back muscle or spine problem which needs the following: • MRI of the spine after clinical evaluation by an orthopedic surgeon. Since you have not mentioned any specific symptoms related to bowel or urinary system it is difficult to say what could have caused your problems. Hence I would advise you the following in such a situation: Consult your primary care doctor for clinical evaluation, examination and related investigations to come to a certain diagnosis so that a proper care and counseling can be done and treated according to the cause. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. T Chandrakant