Wow, I am going through the exact same thing as you. I was "diagnosed" with sarcoidosis almost three years ago and havent even been able to get in to see a rheumatologist at mayo because they are so booked that they all say I need to have my lymph nodes removed surgically to confirm it isnt lymphoma.

Then last year I started having severe hyper thyroid symptoms, and still am. Went to an endocrinologist. I also have 2 nodules on my thyroid, have lost 30 lbs, suddenly developed high blood pressure and high heart rate. I have the Chek 2 genetic mutation and a history of personal breast cancer and family thyroid cancer. The Mayo endocrinologist- I had to sit and argue with her for almost 1.5 hours because she refused to admit that I did my own good research before coming in and denied that your TSH levels are affecting by your circadian rhythm, and the last time I had been tested I was right at the border for hyperthyroidism so I asked to be tested twice, once in the evening, as I am a night person so all of the medical journals I read stated my TSH levels would be reverse and would be at their lowest in the evening, not the morning. She just flat refused to admit this was a thing. Then she literally diagnosed me, without running any tests, as being on adderall and being (this is in her notes) overly concerned about cancer, because I wanted her to just do what the radiologist suggested and biopsy these nodules. I also had to insist on her running the antibody test, as if it was extra work. Surprise surprise, that's positive. I end up in the ER with heart issues at 2am a few weeks after a borderline TSH result and they run it and it's close to 0, and I still havent had the biopsy because she refused to order it and tried to insist she had to do it. Like she wrote in her notes, in my medical record, that it was adderall I have been on for 7 years causing the symptoms , but then refused to allow me to see another doctor, and then she says the antibody test isnt positive for graves, she like downplays it and acts like it's normal for that test to be positive. Meanwhile it's been almost a year and I still ha rant been able to get in to see a different endocrinologist and getting the biopsy order has been so difficult, I am still losing weight and have no energy to do anything and I just want to not wake up. All so that this doctor could what, deny that I was sick because of some power trip? I had cancer when I was 26, and from doctors to pharmacists to social security, my age and the fact that I am female, and have a disease where the outward symptoms only manifest when it's at its worst, I could literally die because miserable and in pain all because these people want to deny that I need to take medication, deny that I am sick. It is the single thing that makes me want to give up the most. Not the physical ailments, not the treatments. Having to explain my diagnosis to another pharmacist and hope they will fill a medicine I have been filling for 6 months, having to explain my history and hoping to be taken seriously.