Hi.
Thanks for your query and an elucidate history.
Absolutely true. The anxiety can increase your problems and the problems in turn increase the anxiety. This is called a vicious cycle.
I would suggest you to all the fresh investigations for knowing the status at the moment.
Upper GI
endoscopy,
ultrasonography of the abdomen to rule out other problems at
gall bladder, pancreas and other organs, which may be directly or indirectly related to the present problem.
You have to start soft bland diet , in the form of small frequent meals.
No aerated drinks and foods which you know increase your problem.
Oral medicines : like
ranitidine or PPI to suppress the acid.
Antacid gels 3 hourly - preferably when you are empty stomach.
Domperidone
All other medications as directed by your Doctor or Gastroenterologist.
Yhe
Hiatus Hernia surgery is required if it is causing associated problems. Small hernia do not need surgery if they do not cause problems.