How were your symptoms?
I never get sick - never had the flu (nor the flu shot), colds never settle in (I may have a day of post nasal drip/sore throat that goes away), rarely get stomach illnesses, or if I do they are more mild than the rest of my family, so my immune system is great.
Anyway, that said, about a month ago I got a bad sore throat, slight fever (I never have a fever either), lots of fatigue for a couple days running, and the sore throat turned into a horrendous mostly dry cough that lasted for several weeks. I STILL have a cough - feel fine, but traces of the cough and some slight mucus remain. And I never got congested in my face.
Weirdest few weeks I’ve ever had with regard to illness. So I’m curious as to what it actually was (I didn’t go to the dr). I’ve joked that it was swine flu, but maybe it was. :)
On one hand not getting sick with the viruses is a blessing, on the other hand, people who never feel sick are statistically at slightly higher risk for cancer.
I kind of get a kick out of all the products to “build up the immune system”, if they were actually making the immune system more potent, they would cause more symptoms with the inevitable viral infections which we all get.
Based on your description, I would not be surprised in the least if you did have the flu.
This year I had 3 days of flu, even my fingers hurt, then a week with no symptoms and felt fine.
Now a deep cough but no fever, from what I understand it is the secondary fever you have to watch for.
Now I am 43 ,in the bracket to get this severely, my flight surgeon ( 75)told me , I'm the prime target for this, the emergency rooms and ICU in NM are full........half are pre-existing the other half, the sickest half are like me.
My wife, who is older has only the cough.
I hope this helps.