I have a heart shaped uterus and a low lying placenta. I am currently 20 weeks pregnant. I had bleeding off and on in the first trimester but not in the second so far. Last ultra sound my baby measured small. Over 2 weeks behind. My dr says the umbilical cord is not pumping enough blood to the baby. He is making it sound like there is no hope. I don't understand. I need so advice. This is my first pregnancy and I don't know what to do or what to ask or tell my dr.