So sorry you're feeling bad. We DO care here at HW. This awful winter truly has been the worst in a very long time. I wish the ice and snow would go away too. I'm in western PA, almost as bad as your location. But notice the sun is coming back, days getting longer. That means there is hope.
I can't say what might help your asthma, but maybe an allergist would have some suggestions.
An ENT could check if you have polyps and snip them out if there are any.
I hope you can get, and get to, a couple of appointments. I've had to cancel a couple because it was just too dangerous to go out. But March will be better!
And while we're waiting for March, if you're not on vitamin D you might consider it. Everyone comes back from a winter vacation in the south with a tan and feeling better. I know I get low in winter, had it tested, take 4000 IU a day. In summer I can cut back to half that. Just something to think about. When there's hope we feel better. (I figured out that when I fell and broke my neck and nobody around. Then I began to be able to move my toes and I said to myself, "there's hope!" And I started yelling and was found. Still have plenty of problems, but it's OK.
I've never heard of flue C. Did you get that? I'd love to hear back from you.