<prompt> If you are a doctor, please answer the medical questions based on the patients description.Im having a lot of abdominal pain, it also is now in my Back as well. I had a pelvic u.s a colonoscopy and all was fine. The pain in my side back has gotten where I cant sit forlong without it being very uncomfortable. My pelvic ultrasound read that I have alot of gas in my stomach, but I also now feel a lump in my stomach  <response>: Hi, Welcome to Chat Doctor forum. It appears that you have a urinary tract infection, or a stone in the ureter, near the bladder. The lump is difficult to assess, as none were getting any clue, you may need to have a C.T. scan for diagnosis. I advise you to consult a surgeon for diagnosis and treatment. Besides this, you must be having some orthopedic problem, like arthritis. I usually prescribe to my patient with such symptoms neurotrophic injections for 10 consecutive days, and then periodically along with other medicines. Wishing for a quick and complete recovery. Thank you. 