Hello dear, Considering the fact that your X ray and ECG reports are within normal limits, the possibility of any Respiratory or Cardiovascular pathology for your symptoms can be ruled out. Under such circumstances, the symptoms as mentioned in your post can be attributed to: 1. Gastrointestinal cause- due to accumulation of gas and excess acid formation in stomach. Symptomatic relief can be obtained with intake of Proton pump inhibitors like Pantoprazole, which prevent acid formation in stomach (to be taken before meals)+ antacid gel (to be taken after meals). 2. Spasm of the chest muscles- management will involve application of muscle relaxant gel & intake of analgesic (like Diclofenac) + Pantoprazole preparation. So, kindly consult your Doctor and start treatment as advised. There is no need to worry, you will be fine. Take care.