Hi, I went to the clinic few days ago and the doc said that I might have post nasal drip because I spit out mucus,stuffy nose,cough,sneeze,....He gave me a nasal spray and said that if it doesn't work come back for allergy testing.How long would it take for this medication to work ? and if this medication doesn't work how many weeks or months should I wait to see the doc ? Thanks
He also ask me if I have any allergies but I couldn't answer because I don't know ;0.