As title says, 3 year old been fine, ate lunch etc no problems. About 11/2 hours ago he suddenly complained of being cold, but looked flushed and felt slightly warm, and promptly want to sleep after a dose of calpol. this is unheard of behaviour for him so he's obviously sick. What do I need to watch for? Could it be ear infection? Stomach bug? He has had a cold for a week or so but not been unwell with it.