thank you for your query.
what your suffering from is the acute sinusitis
variety which generally lasts between 3-5 weeks.
but if it lasts for more than 6 weeks then you need to shift your regimen to-
Medical therapy should include both a broad-spectrum antibiotic and a topical intranasal steroid
to address the strong inflammatory component of this disease. Antibiotic therapy might need to be continued for 4 to 6 weeks
symptoms generally subside after this period.
wishing you good health