You had the flu.
Bwahahaha!
In all seriousness, I definitely had covid,and not the flu, which was confirmed by both the swab test at the tail end of it and by a blood test for the antigens a month later. Both tests were positive. I performed them both, as I had done when I had other "colds" which I suspected might have been covid, but turned out not to be.
I had the flu 20 years ago. It's an experience I'll never forget. I avoid doctors and hospitals at almost all cost, but when I had the flu it was so horrid that I was barely able to drag myself to the hospital. I really thought I was going to die.
For both me and my wife, covid was a joke in comparison. A light, annoying cold, and that was that. Didn't even think to break out my stash of ivermectin, quercetin and zinc. Jut hit some vitamins D3 and C and that was that.