my na me is siphi,my son is 4yrs ,immunisations up to date,no allergies,no hx of astma but has been coughing on and off for the past one year,when he gets the cough at times it gets resolved with antibiotics particularly cotrimoxazole,but this time he has been coughing for the past one week,no temperature,cough is dry,has been eating and drinking well,nutritoin good,hydation good,not using any accessory muscles to breathe,am confused because the cough is getting worse,he coughs,continously,have taken him to hospital,has taken amoxycillin with no improvement,was started on bactrim this morning,he is playing around,allert