hello sir my son 3.5 years old is suffering from coughing from past 4 -5 days i give him cough syrup but no relief. now yesterday gave ventiphylline pd and Amoxyll potassium clavunate.. after taking antibiotic he vomit. he did not sleep alnight. he vomit 2 times in night . what should I do.. he is continuously coughing. cough did not sleep him properly