Thanks for writing your query.
After reading your post, it seems that your pain in abdomen is due to increased acidity in the stomach.
You should follow some precautions like :-
1. Avoid spicy and oily foods.
2. Donot miss a meal.
3. Avoid emotional/mental stress.
4. Avoid doing self medication
especially with pain killers and steroids
5. Drink lots of pure water daily.
You can take antacid like Omeprazole
20 mg daily along with Domperidone
10 mg for relief from your symptoms. Antacid in gel or liquid form is also beneficial as it forms a protective layer over the damaged mucosa of the stomach.
You can get yourself investigated for :-
1. H. pylori infection.
If the problem persists, get your examined and investigated by Gastroenterologist.
I hope this is useful to you.