Go to Nature throid! They have doubled the price of Armour! Its the same thing different fillers.
It sounds like your synthroid dosage is inadequate. Is your doctor willing to add a T3 medication such as cytomel, to your synthroid? This is often an option, as well.
Please post your current thyroid hormone levels, along with reference ranges, which vary from lab to lab and have to come from your own report. That will give us a better idea of your exact status.