Hello! My cat Roxy throws up everyone once in a while, but I was assured by my vet that it was nothing out of the ordinary, but tonight I'm kind of worried! She has thrown up a number of times tonight ( many times nothing solid). It seems like she does it whenever she eats, or drinks any water. I've changed her food from something I buy at the vet (I can't remember the name, but it's something healthy) to Purina One: Special Care, Adult Cat: Sensitive Systems. She's been eating it for about a week, and I haven't seen any problems. Please note that when she vomits, she hides, but then comes out ready for attention, and seems like nothings wrong. Please help! I am very worried! Any advice would be greatly appreciated. Thanks for reading.