The fetal pole is the first sign of an embryo in early pregnancy ultrasounds. If the fetal pole doesn't have a heartbeat, it could mean a missed miscarriage. Sometimes, a fetal pole isn't visible ...
What Is a Yolk Sac? A yolk sac is a small pouch made from thin membranes. The yolk sac is one of the first things to develop during pregnancy and one of the first things your healthcare provider will ...
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