Our 3yr old daughter let our 8 month old inside kitten out the other day, and she was gone for several hours. I would like to think that our little Boo is still "innocent", but ...... We have plans of getting her spayed, but she needed shots first. Now I want to wait to see if she is pregnant before taking her in. I would hate to be spaying a pregnant cat. I would feel as if she had an abortion, and that would be Horrible. So my question is.... How soon will I know? How can I tell?