Hello As all other tests are normal and no other symptoms , so this type of bloating and pain in abdomen ( discomfort ) may be due to : Indigestion or hyper acidity , these are most common cause of such type of symptoms particularly in child of 5 -6 years age. These measures will be helpful: 1 Try raising the head of your daughter s bed about 4 inches with blocks. It might also help to avoid eating or drinking for 2-3 hours before she lie down. To control stomach acid one should not drinks with caffeine in them or excessive tea or eat chocolates or eat spicy of greasy foods . Also give her some antacid but if severe bloating and discomfort she may need drugs like ranitidine 150 mg on empty stomach. 2 Over eating is another cause of such symptoms , so take care about that also .Fried food , red chillis ( in excess ) also causes such symptoms , so avoid these food items along pizza, burgers, hot dogs . Hope these measures will be helpful for your daughter. Good luck.