Stomach Acids Going to Town and Driving Me Crazy-What's Wrong???

I have horrible acid rumbling in my stomach at night. No matter what I do, it doesn't let up. What should I do? Would taking Prevacid help? I'm sure my doctor would try it if I wanted to. This is really frustrating! I have tried Mylanta, Zantac 150 over the counter, Pepcid, and my stomach just growls and growls from 3AM on. I get up, drink 1/2 cup milk, which helps  to simmer it so I can sleep.

I even went so far as to try baking soda. But it did not work!! Maybe I have an ulcer. I am a diabetic on insulin, take high blood pressure pills, pills for urinary tract infections all the time, and pills for depression.

Has anyone dealt with this stomach issue from an ulcer or another cause, and solved it? Please let me know. Thanks!