question: I have pain and can feel a mass on my left upper abdomen. CT scan was negative. Pain worse over last week and radiating to shoulder blade. Hurts sometimes to breathe. This is with 15 mg of MSER 2 hrs ago and Oxycodone 5 mg 1 hr ago. I have chronic pain from MELAS syndrome. At wits end. Will not go to ER because first impression seems to be that I am seeking pain pills.