hi, thank-you for providing the brief history of you. As your physician mentioned you might have pancreatitis, why not going the scanning of the whole abdomen which can help look further deep into the tissue level which might help us to come closer to the root cause. Also , most organ will lead to something called as a refered pain. that means the pain in the kidneys due to kidney stones leads to back ache and this is called the referred pain. So getting a ultrasound scanning of the abdomen will expose the internal organs and help to come closer to diagnosis. Also, after the scanning, the insights provided by it will help further to plan the precise treatment plan. Also, you may need to do some general exercises like breathing, abdominal strengthening and for back ache physical therapy will help reduce the pain and symptoms. Regards Jay Indravadan Patel