Sounds weird, but my symptoms were the same and I was just dehydrated. At first, I could not believe it.
Now, I know better. Even at that time, I did drink a lot but also coffee. And that dehydrates more than you might think, same with Soda. So, now when I feel the same nasty things coming up, I start drinking more. Not only water but also juice and soups.
I don't know if it will help but my symptoms were there for so long and I never realized how simple it was to feel better. It took a while though, because my body was in bad shape.
good luck!