Hi. Thanks for your query. Noted the history of getting spasm on left side under ribs, sometimes gong from right to left and occurred after colonoscopy wherein 4 growths wee removed. This is classical colonic spam and can be die to formation of hematoma, edema post removal of the growth. I would advise you the following: Get CT scan of the abdomen. Stool tests. Repeat colonoscopy. Liquid and soft diet. Stool softeners Rest All these lead to the proper diagnosis and management if at all required, as in most of the cases this will heal on its own.