Will have to see your reports. There can be serious causes of third trimester IUFD, like, Congenital birth defects. Genetic abnormalities. Placental abruption and other placental disorders (such as vasa previa), Placental dysfunction leading to fetal growth restriction. Umbilical cord complications. And Uterine rupture. This will require proper treatment . Dr Rupal (Senior Consultant Physician) Mumbai