Now, I'm no doctor, but this sounds like you need much more sleep. Try taking some time off of work, getting blackout blinds to block out the light and sleep for as long as possible. The nausea may also be from lack of sleep, perhaps try drinking more water if this doesn't work. I'm not 100% sure that this will work, but please do try. Good luck, and I hope you get better.
Even if you had anxiety, most anti-anxiety medications don't work very well, considering their low efficiency rates and all the side effects associated with them.
And then there are the withdrawal symptoms, right?
How long were you on the anti-anxiety med?
As far as GERD goes, to my opinion, this is not a proper medical diagnosis,but rather a symptom of an underlying undiagnosed condition.
And in the vast majority of cases acid-reducing medications do not work, beyond momentarily relief and then the body produces MORE gastric acid to compensate.
In the event the gastric acid production is already impaired (one of the main causes of GERD!), acid-reducing drugs further reduce the gastric acid to critical levels, affecting, digestion, absorption & assimilation of essential nutrients
This is not the best way to address any health condition.
I would start with food sensitivity testing.
For fast results, I suggest you look into Dr. Cocoa's Pulse Test, which might be more accurate than IGg blood tests.
Same 2 blood samples taken from one person and sent at the same time to the lab has often returned 2 very
different reports, haha.
It's a self-test and it takes a week to complete, but you must follow the online instructions very precisely.
The other way to test is by doing a food elimination, starting with the wheat/gluten group, which is the one with the highest sensitivity rates and the longest to do, since gluten effects linger around for many weeks after its elimination from diet.
You can also do the Betaine HCL and/or the baking soda burp challenge on your own to test your gastric acid levels ( do at least a day away from anti-acid drug intake). Just look these up online.
On another note, you may want to start doing some gentle yoga, which could help calm your body and your mind.
My daughter is an advanced yoga instructor and I have seen some phenomenal improvements in many people
in her classes.
Various types of yoga instruction are offered at most Universities at reasonable prices.
I hope this helps and if you need any further details, please let me know.