Hello – We are fellow patient here, not docs, so we are not allowed to interpret labs, but here are a few thoughts…
1. The lab values are only helpful in the context of your own lab’s “normal” range. Some patients do find that they feel better in a particular spot in the range – for example, in the middle, or in the upper end.
2. Starting fresh with a second opinion might help you get to the bottom of the fatigue. In particular, the heart issues would be worth checking out, as you mentioned you had a pacemaker recently installed. We also met an endocrinologist last year who said that she often finds new cases of sleep apnea when patients are feeling fatigued but thyroid levels are normal.
3. You might ask your doctor about trying a brand name instead of generic (Synthroid, Tirosint, etc.) or possibly about trying T3/T4 combination therapy. We hear mixed reviews of this from Graves’ patients, as some believe that it brought back their old hyper symptoms).
You deserve to get your quality of life back, so please continue to be persistent until you can find a doctor who will help you put the puzzle pieces together.