I am posting my opionion on the 'chances' of her getting pregnant, assuming she takes her pill, *everyday at the same time* that is sooo very important for the pill to work to its full potential. If you take the pill correctly its like a .03 percent chance of getting pregnant, I think. People have gotten pregnant while on the pill but most likely they wernt taking it right, or they just happend to be that .03 by you using the pull out method too, thats good, your chances of getting her pregnant is less I think, because when I started bc, I stopped the pull out method with my bf. Just assume when having sex there is always a chance of her getting pregnant, so just have her take a test a few days before her period and see. But if shes doing everything right with taking her birth control, I wouldnt worry too much. :)