Persisting cough

Caden has been coughing for the past 1 month. He doesn't cough throughout the day but tends to cough very badly at night and mornings when he is awake. We had brought him to Dr Sim and he has given him some stronger dose of medication to treat what he thought sensitive lungs. After the full course of medication, he has not recover and continues to cough badly. Last night, he woke up at 1am to throw out his dinner and milk after coughing for some time. We brought him for an x-ray on Thurs (as Dr sim recommended to see if there is any infection in his lungs before he changes the medication). We will only get to know the results tom or tues and hoping that it will turn out fine..

Playing happily at home during the day - without coughing..