My one year old male kitty went to the vet today and they are keeping him overnight. He keeps throwing up after he eats so we brought him in. He eats so fast and throws it back up right after he eats. He eats wet food and picks on dry. He has been making a noise that I thought was purring but it sounds like a very raspy purrr. He is sunken in on the sides. Has anyone ever experienced this before?