I have Hashimoto’s. Be sure you are taking your thyroid meds as prescribed. And on the day of a test for your thyroid ask your doctor if you should or should not take your thyroid meds that morning of the bloodwork. Also do you take any supplements with the thyroid meds at the same time that can interfere with accurate test results.
And I know it’s exhausting seeing doctor after doctor but seek out a THE specialist in thyroid disease in the country. If it’s difficult getting to them, perhaps they may be willing to consult with you via zoom or over the phone to look at your test results and history and give you some advice.
Best to you.