Wishing you well for your upcoming scan. Congrats on the earlier good test results.
I wanted to second what texstyle said. My mom has similar experience to texstyle. Though your thyroid issues are different than my mom's, many doctors don't treat with T3 combined with T4, only T4, so it's worth mentioning. They might treat with Cytomel (synthetic T4 & T3 combined) if they won't look at Armour (natural T4 & T3 combined) . My mom finds docs who will prescibe the Armour and drops those insistent on synthetic T4 (Synthyroid or Levothyroxine (sp?).
She has not tried Cytomel (synthetic T4 & T3 combined). One of my mom's nurses has similar issues and prefers the Cytomel over Armour because Armour makes her more anxious. In addition to the fatigue, constipation, fuzzy thinking, pains in her legs, and possibly depression, all plague her without the T3 component.
Mary Shomon's books explains more. Shomon is pretty alternative but for some people 'alternative thyroid treatment' is a god-send.
Why would your docs let you suffer this killer fatigue if thyroid supplementation would solve it?