I am a 22 year old boy, I underwent surgery to correct nasal septum deviation and removal of tonsillitis in 2014, ever since my surgery whenever I have cold which usually recovers in 3 days time, I am left with chronic cough that lasts for weeks and at times months. During this period I take medication for acid reflux, asthma, cough syrups, anti allergens, antibiotics (all as per prescriptions of top ENTs). Overtime this cough absolves but only till the time I get cold again and the cycle restarts. I have been suffering from this for the past 3 years, please help.