If this is constant diarrhea and vomiting, I would not treat it myself. I would be off to an emergency vet! This could be anything, and not something to mess with. These little ones dehydrate quickly when they have diarrhea and vomiting.
I sent a PM to a YT member who lives very close to you. Perhaps she can give you the name of a good emergency vet to go to.
Good luck!
