Hi I can understand your concern.... You had hiatus hernia , so from that developed acid reflux and chronic acid reflux disease leads you to development of barret esophagus by irritation from acid .... Any way you have operated for hiatus hernia repair. ... Just now try to avoid more irritation of esophagus. ... Omeprazole capsule taken for reducing acidity .... Meanwhile avoid heavy and spicy meal .. Sleep two hour after taking meal .... Avoid smoking .... Head elevation while sleeping .... For your barret esophagus constant surveillance needed. .. . If no dysplasia in endoscopy than at every three year endoscopy needed. .. If neeeded than endoscopic resection of mucosa done .... Laser therapy also available for it. .. Treatment depend on your subsequent endoscopy report ... Your cough is by acid reflux .... If you provide your endoscopy report than further guidance can given ... Take care .....