Hi, welcome and thanks for sharing here. I got sick after having Covid twice, although it was three months later. EBV was reactivated, no one knew what was wrong. I was told I had arthritis, my ANA titer was speckled and 1:8, however, I tested negative for all the autoimmune diseases. I am still struggling, 3 years later. I believe that this is Long COVID. The symptoms I have had over the last 3 years have mimicked other autoimmune diseases but the biggest is fatigue and post-exertion malaise, tinnitus, pain and inflammation and brain fog. I am going to inquire about the tests you took. I do know that a metallic taste in the mouth can be linked to kidney issues. I have also had times where I would eat something and my mouth burned so bad that I could not eat and then it would be gone the next day. Thank you for sharing and I know that I have found support here, in this community. I am facing having no health insurance in 2026, due to the broken healthcare system in this country. Thanks again and you might check the Long COVID page as well.