How do you stop a cold?

Maria
I was ill two weeks ago and today I've been feeling off. My worst fear is waking up completely sick tomorrow and having to go through another week or two of having a cold. That would mean essentially being sick 75% of January... 
Anyway, I stuffed my face with vitamin C - from the pharmacy and in the form of fresh orange juice. I also had ginger tea. 
But what else can I do to stop the onset of this cold? That do you ladies do?