Favourite answer

No she cannot get pregnant in the butt. The butt is the end of one long tube that, going upwards, begins at the mouth. There's no connection between that food tube, and her baby-making machinery which opens to the world through the vagina. Completely separate.

But if she has anal sex, it's possible for sperm to leak out of the anus, and enter her vagina; and so get pregnant that way. Possible but not probable.