After 45, experts say, it's almost impossible to get pregnant using your own eggs.Among women who did get pregnant, the miscarriage rate was 24 percent for 40-year-olds, 38 percent for 43-year-olds, and 54 percent for 44-year-olds.http://www.babycenter.com/0_age-and-fertility-getting-pregnant-in-your-40s_1494699.bc