Kay . My sister is five months pregnant &'d she's having a girl . She's been told that her baby head isn't fully developed when she was four months , &'d now she's five . The rest of her body is fully formed like in great shape . It's just the head isn't forming right . I want to know what can we do to help this baby &'d what is this medical called because I'm like her so worried about her &'d the baby . I'm her big sister , I can't eat nor sleep at night because I'm worried about my niece .