All the investigations are normal in your case.
I think the fault lies in your diet. Please consume a bland diet with lots of salads and fruits and plenty of water.
Avoid the 5 "s" - smoking
, spirit (Alcohol), spices and sedentary lifestyle.
You should be fine soon. Continue to take Pan- D and sorbiline syrup for three more weeks. Get a urea breath test
done to look for H. pylori infection.
Hope this helps.