Seeking advice about my cat. He ate some plastic Easter grass earlier today and has thrown up several times since. He is moving around and enjoys being rubbed, but obviously doesn't feel well. He ate a small amount of tuna and drank the juice from the can, but an hour later, he threw it all up. Never dealt with anything like this, so I don't know how serious this could be. If I need to take him to a vet tonight, are there any 24 hour vets nearby, or should he be okay until morning?