been away for a week, been home for a few hours and (only..) just noticed that one of my cats eyes is dialted whilst the other isn't. we had a cat sitter come in and look after her twice a day. cat (7 months old) seems really happy/full of beans. this has really freaked me out. i am sure i would have noticed this when we first came in the door a few hours ago, possibly not. now i can't stop looking at it. is this a normal thing or should i take her to the vet on monday, really freaked me out, thanks