@susief,
It is likely to be due to gastritis. I would recommend you to take an ECG and rule out any cardiac involvement. You will need antacids. The following steps may help:
1. Reduce/ Avoid spicy, fried, fatty, junk, and oily food
2. Avoid/ Limit drinking coffee, tea, and carbonated drinks to once a day
3. Exercise daily
4. Increase regular intake of water to 3liters
