Hello doctor, i am a 27 years old female. i have been suffering from post nasal drip from many years. i.e., if i get a common cold, it will then turn into dry cough and throat infection. my physician told me that it is a post nasal drip. if i get this, i will get prolonged cough for almost 2 months. i am really fed up doctor. right now i am in India. but in another few months, i am moving to London since my husband is there. as you know, London is a cold country. and i am really afraid of my health because of this post nasal drip.. please help me