Hi and welcome to Healthcaremagic. Thank you for your query. I am Dr. Rommstein, I understand your concerns and I will try to help you as much as I can.
Your symptoms are nonspecific, but these may be suggestive of 
gastritis, GERD or hiatal hernia so you should do gastroscopy to evaluate it more accurately. This is caused by irritation of stomach mucosa by certain food or medications, stress and 
smoking. SO firstly it should be treated with 
home remedies and changing dietary habits.
You need to avoid fried food, carbonated drinks, coffee, alcohol and spicy food. You should eat more milk products, vegetables and boiled food. Also, certain antiacid medications may be required such as PAntoprasole or 
Ranitidine. In cases of 
severe pain,  diagnosis should be established with endoscopic tests which include gastroscopy or barium swallow test.
I hope I have answered you query. If you have any further questions you can contact us in every time.
Kindly regards. Wish you a good health.