I had covid 2020 in November 2 covid shots and caught omnicron in August 2022, since this time I have developed neurological problems, excessive joint pain,barretts desease, erosive gastropathy with stigmata of recent bleeding, diverticulosis,pre pylori stomach,ulcers,diffusely heterogeneous thyroid it's brought on by autoimmune thyroiditis,in which your body's immune system can't differentiate between your own cells and foreign cells so it attacks your good thyroid cells.I have developed nodules on both thyroids. They say your thyroid will return to normal eventually. I lost 30 lbs,a bad respiratory virus can cause thyroiditis. Long covid is horrible it causes auto immune problems I also developed ear problems, teeth problems, lichenoid dermatitis, glossitis on my tongue,