I left my cat with a family friend that has multiple cats, including a male cat but I was under the impression he was neutered. And the family friend never said anything about her escaping or going outside. So, when I went and brought her home she looked a little big bigger but I wasn't thinking to much off it, I thought she maybe gained some weight due to she had access to food 24/7. Around a week or so later, I was petting her and her nipples seemed to be a bit bigger, and slightly pink but I wasn't thinking to much of it. After, she started to throw up and get a little bit bigger. I called the vet, for reassurance, and she said "she could possibly be pregnant" but I didn't believe it cause I was still under the impression the friends cat was neutered. Her belly started to get quite big and round. So, I was looking up signs of pregnancy and those are all signs of a pregnant cat, from what I have read. For the past week, I've been feeling her belly to feel for any movement and didn't feel anything till late last night, I can also see the kittens moving a little now... Will she be going into labor soon? She's also a really small cat, could her being so small affect anything? For the past week she has also been following me around a lot, and wanting a lot of attention, which she normally doesn't do, should I be worried? I also have a male cat, that is neutered, should I be worried about him?