In the opening pages of Carrier, Bonnie Rough’s unborn son speaks to her in a dream: “Don’t rule me out.” Written into her DNA is a rare genetic disorder (“carried invisibly by mothers and passed to sons”) with an agonizing list of symptoms. Her brother has it and she can’t imagine her world without him–but what of the child inside her? In this profoundly honest memoir, Rough infuses pregnancy and the specter of terminating it with equal measures of grace.