Hello dear, Normal findings on ECG rules out any Cardiovascular pathology. However, X ray of chest should be done to rule out any Respiratory cause for your symptoms. The symptoms as mentioned in your post can be attributed to production & accumulation of gas in the stomach, which can be secondary to increased acid formation. The reason for increased acid production can be Stress/ Anxiety, inappropriate diet & lifestyle methods or infection associated with a type of bacteria called Helicobacter pylori (H pylori). Symptomatic relief can be obtained with intake of: 1. Proton pump inhibitors (which prevent acid formation in stomach) like Omeprazole, Pantoprazole,etc. to be taken twice a day, half an hour before meals. 2. Antacid gel can also be taken after meals for the same. Wishing you a Good Health. Take care.