I've been having a lot of stomach issues off on and, too - and my stomach is one of my main anxiety triggers.
Of course the digestive tract and anxiety are highly interrelated, so I've had a really difficult time determining which is the chicken and which is the egg, so to speak. Is my anxiety causing my stomach issues, or the other way around? For me, I think I had a stomach bug a few months ago, and then my anxiety has kept some of the symptoms like mild nausea and pain persisting. To help support this theory, my naturopath did a test for me on the bacterial growth in my GI tract, and the results indicated I suffer from anxiety (ha!) and don't have any other major diseases or issues.
I've particularly had a really hard time coping at work. I have a severe fear of vomiting, so much so that I'm pretty sure that's why I don't even when I'm sick - it's been years and years since I've actually vomited. Still, every time I start having stomach issues that are probably anxiety-based, the flood of thoughts starts, "Am I going to get sick at work? How will I get home? What if people see me?" and the whole thing gets worse.
So, Hugs, now that I write it out, I definitely feel stuck under my own waterfall too! I'm also trying to work my way back to my regular comfort with my regular schedule, and having a hard time of it.