neti pot. if you're super congested it may take a few tries to get irrigated, but these things really work. most cw cold remedies "work" by drying out your sinuses and nasal passages. this causes a boomerang effect and most often extends the life of the cold.
if you don't have one, order one immediately. in the meantime, tent your head with a towel and spend a few minutes every couple of hours over a pan of boiling, steaming water. a couple drops of eucalyptus or lavender oil really helps in there.
blow the junk OUT of your nose. don't snorfle it back inside.
bone broth with ginger steeped in it. as much as you can tolerate. you need the fluids and the electrolytes.
sorry you feel like crap.
As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.
– Ernest Hemingway