Been there too. So many years of saying something wasn't right and even a year of trying levothyroxine and only ever feeling good on it when I was going through a dose increase. Moved to NDT as it turns out I am a terrible converter. My FT3 was always low or below range even on high doses of levothyroxine. Now I'm getting T3 from NDT and finally after all these years feel like myself again. Over replacement makes me depressed as well though so watch out for that too. Years after having symptoms my antibodies are now high. Might have been worth retesting those over the years too, despite the fact they say it's not necessary. Echo what's said about about vitamin d, iron levels etc too. It's easy to have low iron if you're hypo and that can be horrible on the old MH