I get days like this too Jaypo....where only eating seems to settle or "solve" the gnawing. I took Omeprazole for about a year but eventually weaned myself off it as I was still having to take Gaviscon at night!
Now I am careful like CLKD, if I go too long in between meals I will suffer for it, especially if I drink anything with caffeine in as that would make me nauseous. I agree with CLKD that little and often is the best way to eat. We've been conditioned over the years to go with breakfast lunch and dinner when listening to when your body is hungry can help.
Glad to hear that the omeprazole seems to be settling things, I think it took a few days for my tummy to actually stop "boiling/bubbling" when I started it too. x