Hello, My 6 Month Old Baby Girl Has A Severe

Hello, my 6 month old baby girl has a severe cold she is unable to sleep for long hours and usually gets disturbed due to blocked nose and cough. She also had a fever however with doctor proscribed anti biotics and fever medicine the fever has gone but the cold, congestion, runny nose and cough still remain even after giving her the 5 day medication dose. Could you kindly help.