Im sure that alot of people have asked this, but my cat has been acting very wierd lately, always tired, and she is laying a different way, instead of on her stomach she is laying on her side, i know she isnt hurt or anything because ive checked for that. Im pretty sure she is pregnant, wich im fine with because i have alot of sisters that want a cat. I just want to know how i can be sure that she is. and if its ok to use flea medicine on her.