Problem Analysis:

Pain below the right rib cage is in the location of the liver and gallbladder, suggesting the possibility of cholecystitis. 

Cholecystitis is often related to irregular lifestyle and diet.

Confirmation may require a liver and gallbladder ultrasound (B-ultrasound) and examination by a doctor. 

Common symptoms include loss of appetite, nausea, and tenderness over the gallbladder area.