Hello ,my kid is 5 yrs old and he has cough from last 2 weeks (wet cough) and in day time it is better but when he sleeps it increases a lot and from last 10 days he is vomiting white foamy mucus after continuous cough and once he vomits it settles down.previously he was treated for allergic rhinitis till we used medicine he is fine .Now i observed tonsil stones in either of his mouth and tonsils also enlarged .is this cough because of tonsils or some other reason ?