Thanks for posting your query.
With the available described symptoms, there appears to high possibility of peptic iulcer disease with decreased gastrointestinal motility.
Presence of nausea, burps and past history of acid reflux
suggests the diagnosis.
As such there appears to be no correlation between past history of gall bladder surgery
and present symptoms.
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
You should also go for complete blood count
, thyroid profile, blood sugar, serum electrolytes.
You should also go for endoscopy with biopsy and urea breathe test for H. pylori bacteria' a culprit agent for peptic ulcer disease
Meanwhile, you should take proton pump
inhibitors along with prokinetics.
You should avoid tomatoes, citrus fruits. tea, coffee, oily and spicy food.
Dr. Mayank Bhargava