Help! Ugh this cold!?

I've had a cold since about Friday night, Saturday morning. At first my nose was pouring snot. Then I was really congested, and now its runny again. Just yesterday I got a small tickling cough. My body ached a lot in the beginning, but its better now. My nose is raw and it hurts! How long will this go on?!! I'm going nuts trying to keep up with 3 kids! How can I speed up the process, is it true that vitamin c works wonders? How? Thanks all!