My 3 year old son has had cold and cough three times back to back in the past 2 months. For the 1st time, he was given levolin and it became okay after 3 days. For 2nd time (happened after a week), levolin did not work, and hence nebulization (budecort levolin) along with Azee200 (antibiotic) was given. It became ok after 3 days. For 3rd time (happened again after a week from 2nd), we first gave him ayurvedic medicine. He started having fever and hence gave him antibiotic again for 5 days. Till antibiotic was on, he was neither having fever not cough. Immediately after stopping antibiotic, his cough started. Now its been near to 3 weeks, the cough has not gone completely. He normally does not cough in the day. Either when he is playing/running or laughing, then he starts coughing or during night he coughs 2-3 times (4-5 coughs continuously). What should I do? I am really worried.