I am so sorry to hear that your symptoms/anxiety have returned! I know how disappointing this feels. However, the good news is that since you had a reprieve from your anxiety previously...you can hope to get back to that good place of management once again.
I echo what Hibee has suggested. Try to find a low cost clinic to be seen...to get your GERD treatment plan where it needs to be...
...and practice self help coping skills daily, to manage the anxiety.
Keep us posted, so we can keep you in support!