After a mistake at the fertility clinic where the wrong embryos were transferred, Carolyn Savage and her husband were shocked to learn they were pregnant with a baby that wasn’t theirs, according to The Stir. “There is no version in the 'What to Expect ...' series for what to expect when expecting the wrong baby,” she wrote in her book "Inconceivable." “To characterize us as terrified is probably an understatement.” Although she says the aftermath was “messy,” she and her husband gave the baby over to their rightful parents, and Savage did eventually give birth to a fourth baby—of her own.