Hi.
Thanks for writing your query.
It will be more helpful if you give more information on :-
1. Is your pain related with food?
2. Any history of injury?
After reading your post, it seems that your pain can be due to increase in acid and gas production in stomach. This can result in 
chest pain.
I would like to advise that you should take an 
antacid like 
Omeprazole 40 mg along with 
Domperidone 30 mg once a day before meals.
Following precautions will also be helpful :-
1. Avoid oily and spicy foods.
2. Do not remain empty stomach for long durations.
3. Avoid mental/emotional stress.
4. Avoid smoking and alcohol, if any.
5. Drink lots of water daily.
If the problem persists, get an Electrocardiogram and 2D 
Echocardiography done after getting yourself clinically examined.
I hope this is helpful to you.
Thanks.