Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain it seems that the symptoms severe heart burn along with pain on swallowing and burping seems to be due to Reflux Esophagitis that is inflammation of the lining of esophages secondary to injury caused by acid.. Indigestion can be a cause for it while weakening of the band of muscles at the lower end of the esophagus known as Lower esophageal sphincter can also cause this problem.. As you have taken just 2 doses of Famotidine that is a proton pump inhibitor it will not completely resolve so soon and can take a few days, say about atleast a week for it to improve.. You should consult a Gastroenterologist and get evaluated and a thorough clinical evaluation and investigations like upper G.I Endoscopy can help in diagnosis and treatment can be planned accordingly.. You can be advised to continue taking Famotidine, take H2 blockers like Ranitidine, take antacids like milk of magnesia half an hour before meals.. You should take small frequent meals every 2 hours. You should avoid spicy and acidic foods.. Drink plenty of water and take ample of Yoghurt in diet as it is Probiotic.. Sleep with head slightly raised as compared to feet and recline in left lateral position.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.