I experienced what you describe in late February. I didn’t have congestion or sneezing but I was exhausted, slept for 10 plus hours at a time and napped a lot but woke frequently with the worst coughing I’ve ever had. I had a 101 fever for a day. I stayed home from work 4 days and went back day 5.
I work in a hospital and yesterday asked the lab when we would have the blood test available. I was told 4 weeks. Eeeegads. If we could just start sooner we could start to wrap our arms around this. I was told it takes time for lab to get the test equipment, then test the equipment etc.
Yes, it was something new that we couldn’t recognize. Too bad about your blood tests and you’re absolutely right about starting sooner. I think Trump is trying to do something about that.