Hi Lisa.
I have Graves, and understand what youre saying.
Are you taking a beta-blocker for the heart palps? A beta-blocker like propanolol, will help with the anxiety, and the heart palps, a great deal.
If youre not on a beta-blocker ask for one.
The 5mg might be a bit low, and you may need a slight increase, you need to get back intouch with the Endo, and tell him you dont feel well on the 5mg, and tell him you felt better on the 20MG, also ask for a beta-blocker at the same time.
Good luck Lisa.
Keep me posted
Nicola
You need to notify your dr. of your symptoms.