39 weeks pregnant

So.... I'm 39 weeks pregnant and this morning I wrote with a really bad cough and site throat. I'm worried because in 5 days I'm going to be having a C-section and I don't want to be sick. Coughing after having surgery done is going to be extremely horrible and painful. I don't want the scar to open or anything. So question is does anyone know what I can do to get better soon!? Right now I just made myself since hot tea....