I had a thyroidectomy in 2006, following a stormy year of carbimazole not helping. I was then on T4 for 6 years, mostly feeling awful. Most pronounced was constant muscle aches and joint pains. I started T4 T3 combined last July, followed by Armour thyroid. None of these helped. I started T3 only this week. I am under care of a doc in Birmingham. Any advice on what to expect much appreciated. So far, I feel better but am on only 20mcg , gradually to be increased. Feel great after 20 mins but a couple of hours later am aching again. Is this normal?