For chest pain cardiac involvement has to be ruled out. I would advise you to visit the ER so that you can be examined and undergo investigations such as ECG, Chest X-Ray, etc to find the underlying cause and have it treated accordingly. These following symptoms may help reduce the pain if it is associated with gastritis: - Don't skip meals, you may not feel like eating but in such conditions you should have the reduced amount in frequent intervals(i.e. 3 square meals broken down to 5 or 6 as you can tolerate) and slowly increase as you get better. - Reduce/ Avoid spicy,fried, fatty, junk and oily food - Avoid/ Limit drinking coffee, tea and carbonated drinks to once a day - Exercise regularly (30-45mins/day) - Increase daily intake of water to 3 liters - Avoid/Stop smoking and drinking if you have the habit - Reduce stress through methods such as yoga/meditation/tai-chi.