within 4 days a dry cough started at night and day, now I have a ...

within 4 days a dry cough started at night and day, now I have a thick clear phlegm in my throat that chokes me if I do not clear it .I spend quite a bit of time spitting up to clear my throat.I was fine before, I have been trying allergy medicines and nasal sprays nothing works.I am glad I read this site as I did try to stay off it for 5 days and the same symptoms persisted,but now I know the side effects can last for weeks so I will be contacting my Doctor to change it