I would like to know the same answer. I have been telling my daughter to get her kitten spade she said she is pregnant because she was getting fat. I told her it is cause now she is not starving and gaining weight. Well it has been several months and NO KITTENS. So I was right. now she still has not gotten her fixed cause she can't tell. She is afraid to take her and her have kittens in her belly. But if she don't hurry it up she will be prego for sure.