Hey everyone, I just adopted two 6 month old kittens last week, and one of them keeps puking today. It's liquid-y. She meows every time she's about to puke, and it worries me, because she has been hiding for the past week, but has only come out to meow and puke. She has been going after her sister's food, so maybe she's eating too much? I'm just worried she could be trying to tell me something, or is this normal?