Cough and Sneezing

My boy 2 month plus having cough sound like barking sound. Now he sleep his nose breathing like got mucus like us adult when got flu. Been 2weeks already. Last Saturday been to NUH they gave eye drop to make nose mucus soft then suck it out using tube nose cleaner. I been using that buy seems doesent work. What should I do?#advicepls #1stimemom #firstbaby