My best wishes for a quick recovery, Walt! And good luck for the tests!
I know that bubble stuff with the stomach - had something like that a few years ago, when I was in a complete stress situation at the job.
At this time I was wolfing down my food like mad, having no time for a decent meal.
One day I thought that my heart was going to quit, and I ended up in hospital, too. But then a rigorous control of my eating habits did the trick. After only a few days those symptoms simply disappeared and never returned.
Hopefully you'll be also back to normal real soon. I keep my fingers crossed for you! :thumb:
Ron