Can you take some days off? You need to lie in bed and drink herbal tea. And maybe postpone Burns night, although I hate to say it.
I have had more herbal tea than you can imagine! As for lying in bed - that's when the coughing is worst. I have most certainly been resting and going crazy. It's the talking that I need to avoid.
Resting? Guess I was thrown off by the 15 hours of skiing you did this week!