My sister is also a nurse. She used to organize flu clinics, and one thing that was mandated was that there was a loaded syringe of epinephrine handy.
I hear you about the cost of office visits! My horse vet will come to the farm and wrestle with 3 horses floating teeth, give a couple of shots to each, and the bill is less than my Basenji's routine office visit!!! Ridiculous!
Well, take care and get better.
When you are up to it, the conversation can continue. For now, chicken soup, tea, lots of rest and follow doctor's orders.