Autoimmune disease possible with positive ANA and ok bloodwork?

I’m 29 years old and have struggled with unexplainable symptoms for four years— since I was very sick with covid in 2020. I was very sick for weeks with liver issues, and once I was over that several months later- I started developing new symptoms. I have blisters and rashes after being in the sun, progressively worse swelling and pain in my joints, random fevers, inflammation in my eyes that affects my vision, and chronic muscular pain so bad that some days I can’t walk. I am constantly exhausted. I have seen a rheumatologist who says I have to wait for things to worsen since my bloodwork comes back clear- despite a positive ANA and some inflammation markers. My symptoms worsen and I struggle with day to day things, but my bloodwork comes back mostly normal. Is it possible to have an autoimmune disease but not have it show on bloodwork? Help!!!!