I had every symptom-high fever, massive headaches, dry hacking cough.........It took some time[3-4 weeks] but then it just all ended other than some slight lung function and fatigue. Distant memory now.
Did you go the Ivermectin route at all ?
January 2020 Had never heard of Ivermectin[as a human med] or HDCQ or being vitamin D deficient or..........Like others that had this different 'flu' at the time we were trying things like Elderberry
After 2 days the high fever had lessened to a more manageable 101'ish for another week or so and by then the massive headaches were gone
The lack of taste/smell lasted for about a month along with little appetite, I lost close to #20
Dry hacking cough, fatigue and reduced lung function lingered into spring
As I've mentioned earlier-wife did develop pneumonia[twice] but refused to be hospitalized either time