Hang in there and don’t give up! My diagnosis took many years (Addison’s Disease), but that’s because it manifested over many years. These things often don’t appear overnight. For example, Addison’s Disease can’t be diagnosed until 90% of the Adrenal Cortex has been destroyed, so it’s often a long, slow road.
I was able to get a dx only after diagnosing myself on the internet (doctors HATE that, especially if it’s a rare disease), and then I had to kick, scream and fire doctors until I found one to run the test. Then I fired her because she decided once we treated the Addison’s, I would be fine. I was not fine, as my thyroid needed to be treated differently once they treated the Adrenal insufficiency. I now have a fabulous doctor who works WITH me to manage my medical issues.
My advice to you: Document, document, document! Keep a file with every single test result, xray, and test so that hopefully a pattern can emerge.
Listen to your body! My doctors were telling me I would live forever because my blood pressure was so low, when in fact it was a sign my adrenals were failing. One of the ways I figured out what I had was borrowing a home blood pressure cuff and figuring out that I was Orthostatic; my BP fell when I stood up, a smoking gun for Addison’s Disease.
Keep track of ALL of your symptoms. For example, the muscle and leg pain I complained to my doctors about pre-dx? All signs of low cortisol. They tried to tell me I was just getting old. They can bite me; Now I’m virtually pain-free when I have my meds optimized (with NO pain meds, I rarely take NSAIDs any more).
Look for Facebook groups, forums, etc. I learned a vast amount on how to get my dx from an Addison’s Disease support forum, and then it gave me the valuable information I needed post-dx to manage my thyroid issues while dealing with Addisons.
Look at alternative therapies. I credit much of my success in finding good medical help to my acupuncturist. She was connected with medical professionals who think out of the box, and she led me to the fabulous GP I have today. Additionally, therapies like acupuncture might give you some temporary relief from your symptoms until you can get a diagnosis.
I wish you the best, and hope that you find the root cause of your issues sooner, rather than later.