Hi!. Thanks for your query. As per your complaints I feel you are suffering from what is called a Allergic Rhinitis
along with sinusitis
. I suggest you see a ENT surgeon for the proper treat ment after evaluation. He may suggest an Antibiotic, AntiHistaminic along with decongestants and Montelucast which helps in controlling your allergic reaction
,of course after a prolonged use of Montelucast for more than two months. But I am sure you will be benefited with the above drugs suggested. Take care.