Grumbling just below my left rib cage moor in bowel region what could it be eating ok no weight loss no pain when asleep?

The grumbling is nor. -mal. it is gas moving past stool in the colon at the hepatic flexure. sounds are called borborigmey (sp) which is normal peristaltic activity. if constipated add fiber and keep well hydrated. to set your mind at ease, see your PCP for an eval.