The best cure I've seen in most infections of the respiratory system, is Azithromycin, for adults it's 500mg per day, 1 hour before meals or 2 hours after, taken at once, during 3 days, at the same hour each day, and in the last day it would be good to take some 150mg of Fluconazole if you don't want to have fungi. It's a remedy which eliminates most symptoms of even strong infections, during some 4 days after the beginning of this treatment. Be aware though, it's a strong antibiotic, so it affects birth control pills effectiveness (and more side effects you should consider). It's a relatively new antibiotic, discovered in 1980, and first sold as medication in the beginning of the '90s in eastern and central Europe.
Both come in various commercial names, depending on the supplier.
If you aren't sure what you got, or if you take additional medications, or you know of some kind of allergies you may have, then consulting your doctor is mandatory.