He has just got over a bad cold, and has had a cough for 12 days. Haven't really been that concerned, but tonight his cough seemed to be worse (ie more often). I can also hear a faint whirring in his chest, but this has been there since the cough began. He doesn't have a temperature and has been running about like a looney, playing and laughing.
What do you think - is it worth taking him to get checked over?