Thanks for your question on Health Care Magic.
I can understand your situation and problem.
Since your all symptoms are associated with food intake, possibility of either gastric ulcer or GERD (
gastroesophageal reflux disease) is more.
So better to
consult gastroenterologist and get done upper GI (gastrointestinal) scopy.
You need to follow certain lifestyle modifications along with drugs.
Drugs like
proton pump inhibitors and prokinetic drugs are useful.
Lifestyle modifications like avoidance of stress and
anxiety, hot and spicy food, large meals etc are useful.
Loose weight if you are obese.
Quit
smoking and alcohol if you have these habits.
Don't worry, you will definitely improve with all these.
Hope I have solved your query.
Wish you good health. Thanks.