Hi.
Thanks for your query.
Noted the history and understood your concerns.
3 years is a long time to suffer from nausea and loss of appetite.
I would advise you the following in such a situation:
Get the upper GI Endoscopy.
CT scan of abdomen.
Tests of blood, urine and stool.
You may need special tests as per the clinical evaluation and expert opinion.
Once a proper diagnosis is done you will be treated as per the cause found like
Omeprazole,
Domperidone.
Multivitamins and other supplements as per the blood reports.
Psychological evaluation for
depression, stress, anxiety may help further and a proper management helps a lot in such managements.
Watch for the situation, factors, foods, beverages which wither enhance or instigate the problems and you should alter or stop these altogether.
Make a list of the foods and beverages that help and continue only these.
Change of lifestyle, thinking, involvement in
Naturopathy helps further.