I'm stupid, I left my kitten alone for hours with a cat toy ball with thread around it sold as a cat toy, given away at my pet store. came home from work to find my cat had vomited everywhere, was very nauseous, won't eat. found the thread tangled all over her cat tree, it definitely came from the ball. its too late for the vet. she is sitting still which is weird for her, and she is in heat, going to be spayed a month after its over. She seems ok other than she won't eat. she is purring, but much more still than usual.