A little update:

Kai just puked up a small piece of bone. Other than that one vomit, he's been acting himself...I'm hoping the bone didn't do any damage inside. He pooped once last night as well. No blood or anything unusual in it. I'm not sure if he pooped today because I was at school most of the day.. I called the vet and asked a couple questions. They said it'd be best if we brought him in so he's going in tomorrow hopefully..(we still need to book the appointment). I feel so guilty for not watching him closer. Poor baby..