I am Dr Mbong.
If the pain comes up when you have not eaten or immediately your eat or if you have over-eaten or with some spicy meal or on eaten 'hard' food, then it can be GASTRITIS
or PEPTIC ULCER DISEASE
especially if it is relieved by eating in general or jelly-like or milky foods in particular.
This can be easily treated especially if diagnosed early enough. So please see your physician for diagnosism dietary advice and for him to rule out other possible causes (like heart disease
Best regards and quick recovery,