Vent away!
I always found that when I was sick, I had to 'carry on' and when anyone else in the family was sick, I had to 'carry on', too.
Now that the kids are grown and on their own, I give myself sick days when I need them. But, of course, I miss the days when I had to 'carry on'. That's human nature, right?
Feel better! And that's an order!!!!