You need a cortizone nasal spray and also antibiotics
for 7-10 days. Augmentin is the best but there is also
Amoxicillin, Bactrum, etc.... If you wait to late it can turn into bronchitis or ear infection and ear infections are very painful if you have ever had one. If that infection does not clear up after antibiotics then you need a CT scan like I had. You have have a polyps or you may need your sinuses opened to be drained.