My female spayed cat of two years got outside tonight. She has been an indoor cat for two years now and has never gotten outside until today. We think she was outside for about an hour or two. We found her on our porch with another cat!!! But she is spayed, but what else should we check her for...could she have gotten hurt or sick by the other cat??? Help?!? What should I do to make sure she is ok??? Oh and she has eaten and has used the litter-box since we brought her back inside.

She is healthy and has her vaccinations up to date. But I'm not sure that the other cat she was with did or not!