I have had Graves disease for over 45 years and have recently been able to get my thyroid under control after a 2 year attack on my body of another unknown autoimmune disease that sent my TSH reading at its height of 21. I had ablation long ago at 18
My opinion is this – if you are not going to an endocrinologist you should. It is too complicated to leave thyroid care to someone who is not. I have heard through the years over and over "your numbers are within the range". But I did not feel well. I am very proactive with my health and (sorry doctors but I do) complain and question when I do not feel well. My long time endocrinologist said – "I strive to have my patients numbers in the range but then will "tweak" the meds based on their verbal input of HOW THEY FEEL. No two people are the same." This doctor has retired and my current endocrinologist changes my meds in very small increments. Waiting 3 months in between each change before taking blood tests again. I complained about that but it has finally worked by his addition of liothyroxine to my levothyroxine. I didn't have energy in the late afternoon where I could almost lay down. It was an overall fatigue. (But my numbers were fine) He finally added the liothyroxine and most days I still have energy at 8 pm.
I hope this helps because it is a very complicated and individual road we all travel with thyroid problems.