You must see that if there is any problem with nose and breathing and you have something trickling down the throat.If so then must see an ENT specialist
and get a CT scan of nose and paranasal sinuses
This happens as the infection from the nose trickles down and irritates the throat and causes problem in the ears as blocked sensation.
You must also see that you do not have reflux of food in food pipe ,burning sensation in chest--actually in night the reflux is more and the acidic contents of stomach come up and causes irritation in throat and coughing.Take care of that by--
Tab. Proton pump
inhibitors +Prokinetics before meals
gel before mealsmultivitamin
Keep head end of bed elevated.
Avoid alcohol, Smoking
Do brisk walking daily
Go for walk after dinner
Avoid spicy food
Avoid late night coffee
Get well soon.