Brady Davis, 37, of Chicago, had reason to be cautious; both he and his wife are transgender, and he’s one of maybe a few thousand transgender men worldwide who have gotten pregnant. The couple’s pregnancy comes after considerable struggle; an initial round of IVF failed, and both Myles and Precious — the first transgender bride on the “Say Yes to the Dress” franchise on TLC — had to go off the hormones that reinforce their gender identities to get pregnant.