Hello
I understand your concern
abdominal discomfort,bloating,nausea can be because of
H pylori infection of stomach//intestinal infection like giardiasis/inflammatory or
irritable bowel syndrome .
-Certain investigations are necessary like
breath test,stool routine and microscopy,
colonoscopy.Further specific management depends on diagnosis
-PPIs like omeprazole once a day for atleast 1 month.If infection found, a course of antibiotics will be needed.H.pylori will need treatment for couple of months .
-Avoid hot,spicy,fried and high fat content food,alcohol as they may excaberate symptoms.
You need to visit gastroenterologist in that regard.
Hope I answered your query.
Feel free to ask any more doubt.