Hi thanks for contacting HCM... Here you are having acid reflux with gas by improper digestion... By smoking you can have inflammation of stomach also.... By back flow acid reflux irritative cough can occur.... Avoid smoking .... Take pentoprazole for few days.... Soft and bland diet taken. Heavy fatty and fried food avoided. Aloe vera juice good one. Cooked oat meal will help in soothing stomach. Blueberries rich in fiber and vitamin c..so good for digestion. If needed for gas fiber supplement can taken. Take more water and fruit juice.... While sleeping keep head elevated by putting pillow.... Hope your concern solved. Dr.Parth