Placenta previa occurs when the placenta blocks the cervix in pregnancy. During pregnancy, the placenta develops inside your uterus. It is an organ that resembles a sac that provides the fetus with nutrition and oxygen via the umbilical cord. Throughout pregnancy, the placenta grows and expands. Early in pregnancy, it's normal for it to be low in your uterus. The placenta … [Read more...] about Placenta Previa: Is it Dangerous For the Baby in the Womb?