My cat Shiloh ate fine in the morning, usual stuff and a few hours later vomited. It's not unusual, cats vomit time to time so it didn't concern me. but a while later he came to me, trying to lie down on me ( he doesn't do that normally) his paws and ears were really cold and I felt his shivering. I covered him with the blanket while he was cuddling to my body...After a while he stopped shivering but he still lying on me which is highly unusual for him. His gums seem more pale than of the other cat. it happened first time...no other symptoms. Any experience with that?