Re: 8 yr old son has fever/cough
sounds more like just a really bad cold (i've been dealing with very similar symptoms myself!!). if it is a cold, keep an eye on his breathing and put him in a steamy bathroom if he gets croupy again. other than that, make sure he gets plenty of rest and give him chicken soup and a nice cup of hot honey and lemon (mix a little bit of each with a cup of hot water... you have to experiment with how much honey and lemon to put in it according to what you like!) to soothe his cough.... there's really nothing else you can do for a cold.
i don't think it's the flu, or he'd have more head and body aches, but it's definitely worth getting checked out if you're worried. let us know!