I see a trend here: long weekend = party it up = sick for a week after that. Oops.
Being sick really sucks but ...
#1. Having been wiped out for a week and a half recently for the same reason, I have my Cold Recovery Routine down pat. This includes having four important fluids lined up at arms' length at any moment: lukewarm water, hot ginger lemon honey tea, cold juice/Gatorade/equivalent, and very importantly, NyQuil ready for swigging straight from bottle. This also includes making large quantities of two dishes on Day Minus 1 (yes, I can tell when I'm going to be sick the next day, and can therefore prepare ahead of time for the inevitable) that becomes my sustenance over the course of illness: homemade chicken noodle soup with lots of ginger, and porridge with lots of ginger. Someone told me ginger was the magic ingredient to recovery and I so am aggressively ingesting ginger just in case it works.
#2. Cuddling up with this little darling while working from home makes things a touch better: