Your problem can be just because of gastritis or it may also be related to Heart.. . There can be many other causes, including heart problems, such as angina Panic attacks Digestive problems, such as heartburn or esophagus disorders Sore muscles Lung diseases, such as pneumonia, pleurisy, or pulmonary embolism Costochondritis - an inflammation of joints in your chest Some of these problems can be serious. Get immediate medical care if you have chest pain that does not go away, crushing pain or pressure in the chest, or chest pain along with nausea, sweating, dizziness or shortness of breath. Treatment depends on the cause of the pain. To rule out cardiac issues. Get a ECG and 2D echocardiography done. If they are normal then get a TMT done Till then continue to take antacids like pantoprazole 40 mg twice a day before meals.