<P> A blighted ovum or anembryonic gestation ( anembryonic pregnancy ) is a pregnancy in which the embryo never develops or develops and is reabsorbed . It typically results in a miscarriage . In a normal pregnancy , an embryo would be visible on an ultrasound by six weeks after the woman 's last menstrual period . Anembryonic gestation is one of the causes of miscarriage of a pregnancy . </P>
gestational sac and yolk sac but no baby at 7 weeks
A blighted ovum or anembryonic gestation ( anembryonic pregnancy )