hi, thank-you for providing the brief history of you. A thorough musculoskeletal assessment is advised. As you had fall bladder surgery in the past, I suspect it could be related to the gall bladder stones. As post removal the Muscles in the area have become weak and need attention. Due to the weakness in the anterior side of body post incision the posterior muscles must have gone weak leading to back pain. Also if the pain is now radiating from anterior to posterior you may need to undergo and ultrasound scanning of the abdomen to see if any organ pathology is present or not? if any kidney stone issue is there or not? keeping all the possible factors in mind and taking up a scan may help eliminating the wrong factors and come closer to the issue and help you better. Based on the diagnosis the next treatment plan can be initiated by which you can become back to functionality life style again. Regards Jay Indravadan Patel