please help my 6 month old femal cat i think just come on season a day ago, i have her brother as well. iv notive he has been trying to climb on her but on times she lets him and times she wont let him. Is there any change he could have mated her. I have seen her been mated by another cat that doesnt belong to me would she be pregnet from him or the brother. If so by brother should i get rid of the kittens as dont wont my cat or her babys to be hurt. please help iv never had a cats before now. JULIA