I'm coming down with a really bad cold..what are the best things to do?

Now don't read this if you get grossed out easily, i'm going to describe my symptoms lol....A few days ago I had a really bad sore throat, then I had a cough but nothing happened when I would cough, but yesterday when I coughed a lil bit of fluid would come up in the bottom of my throat and burn and I would be hot one second and cold the next, and today I'm all congested and stuffy and cough up phlegm...its so nasty...but I want to know the best things to take (meds wise) and what kinds of food to eat and how much I should drink and what are the best things to drink. Help please!!