I have dull pain under lower left rib sometimes under lower right rib also . nausea feeling sometimes, pain is worse after eating. had 2 recent ct scans , both normal.numerous blood tests normal. im stressing so much over this could be colon issuse?

Consider abdominal ultrasound - more sensitive for detection of gallstones; consider HIDA scan for ducts. Have you been checked for H pylori infection of the stomach as that can also cause pain . Would also check lipase / amylase/elastase ( pancreas ) . Would check cardiac function( as that can masquerade as GI pain) and the rare possibility of ischemic bowel / or splenic aneurysm f/u/w/MD