Halls has a sugar-free cherry coughdrop that they sell just about everywhere. Call around before you go to the store though, as a few places don't have it, from my experience.

Even without the carbs, sugar-free cough drops are still better. When I was a smoker, I had a constant nagging cough and used to live on cough drops; I always bought the sugar-free ones, not because I cared much about sugar or carbs or calories or anything like that back then....but the sugary cough drops coated my teeth like a sweater! Gross (sugar is sooooo gross).

Get well soon!! And don't worry so much about the carbs right now, Nat and wbahn are right; just try to stick to low carb food. Feed your body what it needs, and get some Vitamin C and Zinc while you're at it!