So, one of the kittens is throwing up. It has to be one of the kittens because two seperate times, there was throw up on the floor after I fed the babies. This morning, after their morning meal, there was throwup on the floor. And it happened again a few minutes ago after their noon meal. Should I be concerned? How do I pinpoint which kitten is throwing up? It is an awful lot of throwup though...pretty huge piles.