Bron, he has a small cold, so I do think that set it off in the forst place. He was coughing a lot during the night to saturday, and during sunday it developed to more and more heavy breathing with a fever. The cough went away after he got medicine too, so maybe it was linked. He was fine all of yesterday and is back in daycare today. His mood has been great through all of this, I was way proud of him.