I am suffering from cough from last 2 months. I had common cold followed by cough. I have recovered from cold but coughing is still their..It is not continuous but once it is triggered it continues for 2-3 mins and then settles down. It happens specially when I lie down or try to sleep. Took medicines, antibiotics, still this cough isn't going away. I get light mucus with cough. Please suggest, Is this normal ?.