Hi WW,
I am sorry that you are experiencing this issue lately, and that it is increasing your anxiety.:(
The good news is that in being pro-active in finding out the cause of your symptoms...you are starting to get the answers you need...so well done!
Keep working towards managing the physical issues with the help of your doctor...and the treaments needed for your reflux...
...and yes, like you asked...there are ways to use coping skills to lower anxiety...and ensure that you are feeling as calm and relaxed as possible.
Here are some links from our Resources that you may want to get started on. These are just a couple of the many great tools available there. Check out the full Resource Guide at the top of the main page if you've not had a chance to do so already.
http://www.stress-relief-exercises.com/
12 Minute Meditation Focused on Relieving Physical Symptoms
https://www.youtube.com/watch?v=q2_UfFIszkY
Keep looking for the answers you need...and anxiety recovery.:)
S.C.