Try switching to Levoxyl if the Armour does not work for you.
If you have GAD, the T3 in armour may enhance your anxiety. Or you could try splitting the Armour dose and take half in the morning and half in the afternoon.
You might also inquire about Alprazolam to help with anxiety. It will not interact with thyroid medications in a negative manner.
When it comes to running tests on your thyroid, ask for Free T4 and Free T3 tests. Along with a TSH test, they are the ones you want run. You can get by with just a TSH most of the time if you have to, but once in a while you need to check your Free T4 and Free T3, especialy if you are on Armour.