I'm trying to tell how far a long my cat is. She looks like she ate a bowling ball, Her nipples are getting a lot bigger and they are redish pink and it looks like there is a white film on them.I can see and feel the kittens moving around, She looks uncomfortable because her tummy is so bigs. she will lay in one spot for a lil while and then go somewhere else. She has also eating a ton of food. She has been romaing around my bedroom and bathroom I think she is trying to find a place to have the kittens. Today I have noticed that her tummy is hard. Any help would be appriceated!!