Hi thanks for contacting HCM... Here according to history you have acid reflux with gastric indigestion problem.. Here you could have simple stomatitis like inflammation of stomach... Here are few advise.... Avoid taking high fatty diet as they can delay gastric emptying.... More water and fruit juice taken.... For few day avoid junk foods and non veg food... Green leafy veg more.... Pentoprazole for week taken.... Kiwi rich in linolenic acid , vitamin c , magnesium , pottasium, pepsin etc...so taken for healthy digestion... Cucumber contain fiber , calcium , vitamin c , folate etc....so good one.... Avoid smoking and alcohol like irritants.. If still problem continue antibiotic used.... For reflux head elevation while sleeping... Prolonged bending like posture avoided. If still cause not clear USG done... If suspicion of hiatus hernia endoscopy and manometry useful.... Take care... Dr.Parth