My brother, Mrs. G and I all had these exact symptoms, in the space of 5 days, with all three of us passing out to add even more excitement, back at the end of December into January.
My brother passed out at the Starland Ballroom while we were waiting for Clutch to come on; he got a meatwagon ride to the Old Bridge ER and ended up being admitted and spending a few days of frustration while they ran him through every test in the book before deciding they didn't know what he had.
48 hours after I last saw him, I went to school feeling like something was very much off. I left the building after teaching two classes, came home, passed out standing up in the bathroom, conking myself on the head twice on the way to the ground, was revived by Mrs. G who arrived too late to catch me, then puked up my guts. The fever and body aches arrived soon after, leading to a night of misery, and the following day I was pretty worthless. Being a stubborn idiot, I refused to let Mrs. G take me to the hospital, which actually turned out to be the right thing.
48 hours after my initial passing out/puking, I was feeling remarkably better, which was good, because then it hit Mrs. G, and I had to attend to her. That evening, she repeated the vomiting and passing out, but being smarter than me, she asked for the hospital. She got an ambulance ride to the ER, where they gave her IV fluids, IV Tylenol, and anti-nausea meds, got her stabilized pretty quickly, and sent her home. It took her a few days to get right after that.
Nobody was even thinking of the corona virus in the general population of the U.S. at the time. Nor do I think we had it.
Anyway, figured I'd let you know you weren't alone. And hope you're feeling a lot better by now.