Hi Most common cause for back pain after gall bladder surgery is transporting you from the or table when you are only semi-awake Less common cause is a retained stone in your common duct which could be accompanied by jaundice Even muscle spasms during the surgery may be cause of post operative complication As digestion gets affected taking antacids like omeprazole will give relief Take some muscle relaxant medications in consultation with your doctor and local pain relieving gels like Diclofenac gel can be applied Use Cold compression in the area which may give some relief Do meditation as per your age(eg if your age is 45 then 45 minutes of meditation is necessary) as this will relieve stress and improve your pain bearing capacity Wish You Good Health Regards Dr Sridhar K