Welcome to HCM
Read your prob, as per your history you have been suffering from chronic gastritis
n heart burn which is cause of abdomen distension. you should get any local anesthetic antacid
10 ml three times a day , n tab like omaprazol empty stomach. along with it you should take fiber riched diet n avoid fatty n spicy diet. this trial helps is subsiding your symptoms n helps in keeping your abdomen flat.