I would suggest keeping the dog away from the puppy for now. I would not give the puppy any kind of human medicine at all. Make sure the pup is drinking enough water. You do not want the pup to get dehydrated. If the pup gets worse you could find an emergency vet and take the pup there. I would also contact who ever you got the pup from. You may be able to get them to help with the vet bills, and even if not, they need to know this pup is sick in case they have other pups and what ever you pup has is contagious. Good luck.