Bad fever, mild shortness of breath (a completely new experience for me -- I didn't even know what "shortness of breath" in the lungs felt like until this), also mild dry coughs on some of the days (very uncommon for me even though I constantly get sick throughout winter).
I would be very surprised if this turned out to be NOT covid-19.
EDIT: I just remembered, I did have chronic shortness of breath some time in 2008-2009. That wasn't caused by lung inflammations, though, so this particular type has still been a very new experience for me. Different sensation, different breathing patterns.