MVanessa, so sorry you're feeling ill. Chronic sinus infections can be quite horrible. Are you seeing an ENT specialist ? Have you had a CT Scan of your sinuses?
Something you could try is a saline nasal spray that you can get at Sams c lub. Some people here use a nasal wash, these don't work for me as they make my nose bleed. Have you tried breathing in some steam?
Really, Really, Hope you'll feel better real soon.