Best cold medicine, please help me!!?

AHhh! My birthday party is tomorrow and I have a cold!! This is the secend day and I've been blowing my nose off. I have a stuffy nose, sneezes, headaches and body aches. So, I was wondering what cold medicines work for you. Any other tips? Thanks so much for your help!!! Plus, does the "DayQuil and NyQuil" cherry liquid stuff work for anyone? (Btw, I'm 15)