cough

Amanda • Michael Joseph 7-17-16
My almost 8 month old has had this dry cough for a few weeks. It's not all day but we hear it every day. Thought it was just due to him drying out his throat from all the talking and screaming lol Took him to the dr yesterday and his pediatrician said he was fine and lungs sounded clear. Starting last night and today his cough has become hoarse sounding and he gags himself to the point where he's thrown up twice. He has no fever so I know that's good. He doesn't sound real congested but a little nasally . But just wondering if this is related to the common cold or something more serious. Anyone else dealt with this?