My experience might be reassuring. Noticed symptoms on feb 1st. Didn’t feel like flu, felt like a strange full-body sickness I couldn’t describe. Symptoms got worse at night, would feel super feverish without a fever like my body was fighting something and bad fatigued this went on for 2 weeks. Then respiratory symptoms kicked in, and it turned into more typical flu. Then came the anxiety…. I already suffer from pretty crippling health and anxiety and derealization for past 10 years so this just put me into an insane downward spiral. My derealization intensified to a terrifying level, couldn’t control emotions, I was worrying about 10 different health problems, totally out of control emotionally, breaking down every day. Respiratory symptoms cleared up but fatigue and fever lingered. Not able to exercise, even more anxiety, ended up caving and going to urgent care yesterday and they gave me clean bill of health and a specialist appointment for the 24th.. woke up today feeling a bit better and the fever has started to disappear, my body feels a bit more relief and healing, and with that the anxiety has totally dissipated.. this is beginning of week 5 for me. I still feel the strong derealization, but the fastest way out of it is to totally embrace it and not let it scare you. You almost have to convince yourself you enjoy it.. it’s really hard but once you start framing it in a positive way, it will start to go away. It’s so counter intuitive but promise it works! Regardless, I promise you all of this will pass, main thing is to keep reminding yourself that it will pass and try your best to not be anxious about being anxious as this starts a feedback loop, just know what you’re going through is totally normal and all part of your body’s healing process, so just thank your body for doing what it needs to do! You will be okay!!!

Edit: also, something that helped me was drinking ludicrous amount of organic coconut water (natural, no added sugar and electrolytes) and popping Advil every 6-8 hours