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From the history you give , you have a problem with your stomach and esophagus
unlikely to be cardiac.You probably have peptic ulcer disease
which can be relieved by antacids like pantoprazole
.You should get an endoscopy
done to rule out an ulcer at duodenum. It s possible that you might have a problem with movement of the oesophagus (Esophagal motility disorder
).Please visit a Gastroenterologist for evaluation .
He may conduct a few tests to analyze your stomach acid , H .pylori infection ,endoscopy to see your stomach and duodenum .
Smoking has the risk to worsen these symptoms.So please stop smoking if possible.
Please feel free to ask us if any further query.