Welcome to HCM. It could due to some nerve involvement in the muscle sprain below right rib cage. It usually subside with nsaid with muscle relaxant.Local application of nsaid gel will be helpful. Also go for cbc,s.b12,d3,tsh,urine,chest x-ray investigations. USG abdomen is necessary to rule out gall bladder stone and even right renal stone. Better consult your physician for proper diagnosis and line of medical management.