That's good you have figured something out at least. I know what you mean about imagining it all I have often told myself I must be imagining this due to others thinking that and then I ended up in the hospital lol.
I have hashimotos which is autoimmune hypothyroidism but you also get periods of hyper with it early on. My grandfather had graves and my father has hashis too. My last test showed my antibodies are higher for it but I'm still on a low dose of Levo.
I also have some kind of gluten and grain sensitivity- when I eliminated those for cross contamination for gluten and no grains at all I stabilized and I gained back some weight and my Bg normalized more again without crashing every time I ate. Lately I'm doing tighter control again but I am having more lows for sure. I need to have more fat on my body for Bg to regulate better. I'd try eliminating all of those and sterilizing your dishes etc. to see if it helps you. If you think ther is a problem of course. I also recently found a nice gluten free restaurant right around the corner. I've only been there once with a friend who was visiting recently but we plan to go again soon.
I may do the saliva test for cortisol at home. Otherwise I'm just taking it day to day.
I hope your knee gets better soon. I had an old injury there that flared up just from doing a few squats I think but now I'm able to go down stairs again without a big spasm- going up was better. I have had a bad back spasm again also. Keeping my fingers crossed and I hope it's mending a bit. I have been taking arnica every day. I realized lately I have been in pain for many years now and I'm so fed up with it. The rheumatologist says I have osteoarthritis now as well as osteoporosis. I'm not sure what he was basing it on. After the last accident I have some bulging discs now.
I hope you don't have lupus. I was tested for that and was negative. Dexcom is a lifesaver for me. Couldn't live without it.
Sorry this became a long list of issues