I have a cat that regularly goes outside ~bad, bad, I know~ ... and I believe that she is pregnant.... Her nipples became visible and obvious and her stomach is huge... she was previously a very slim cat. I took her to the vet and he said he didn't feel any kittens and said that she wasn't pregnant.. She's eating a lot and.. well frankly, I disagree. What are some typical behaviors displayed by a pregnant cat? Should I be concerned that something is wrong with her? Help, please!