No it only happens with a guy.
Want to know if a girl can get another girl pregnant? You'll be surprised to know the answer is actually... No!
Pregnancy happens when a female egg is fertilized by a male's sperm. Since a girl can't produce sperm, there is no way she would be able to get another girl preggers.
If you want to go down the route of transsexuals/hermaphrodites and what not, then that's a whole other ball game. If they used to be men and still have all the "equipment" then it's possible. But for a 100% femaleto make another female pregnant. No way!