Not sure why you would have a 6 week old puppy anyway; with the presumption that the you just got it, and hopefully was checked out by the vet, truly has not been cold, temp.is normal, and has not been around other dogs, too many people and is as playful as a 6week old could be, and eating and drinking is normal I probably would not be extremely concerned. It would however be advisable to have your puppy checked out by the vet as it probably needs some puppy shots.
