Sick in Ohio

I have been told by my gastro doctor that I have high stomach acid.
I have taken all the pills, purple, pink and black (Precavid) all of them and over the counterproducts. I do not have any dental problems. I have had sinsus surgery in the past. I cannot get rid of the constant bad breath.
I take fiber daily, probotics, etc. I have constipation also. I do not have delayed stomach empyting anymore according to the last tests.
My grandmother died of stomach cancer. I cannot remember her symptoms other than bad breath also.

Thanks
Sick in Ohio for 10 years

Any Suggestions?