Hi welcome to HCM... You have problem of excess gas formation .. So suggestive toward functional bowel problem... Here as you are having celiac disease avoid gluten diet like wheat , rye and barley etc... Diegene like syrup can be taken for relieving gas and acidity .... Eat slowly while eating .... Avoid stress and avoid smoking habit that are related to bloating of stomach.... Drink more water ... Green leafy vegetable taken more ... If constipation there laxative can be taken .. After gluten free diet for four to five month repeat biopsy taken to determine whether mucosal morphology improved or not . If no improvement than other cause for villous atrophy investigated like HIV , giardiasis etc.. If severity of celiac more with diarrhea than steroid might given ... Take care ... If no improvement in symptom USG done for rule out organic cause . Advise : gastroenterologist consultation.