Thank for the response we came to the same decision last night. She has her own room upstairs away from the rest of the cats. She seems very happy. She is about half way through the pregnancy so we will take her to the vet probably one more time before she gives birth and get her re-tested then. The vet said to wait a month or two after the kittens are winged till we get them tested because they will test positive for awhile after.