How is fluid measured in late pregnancy, when the Dr measures the entire inside of womb but doesn't appear amniotic sac is visible? Do they?
Assume the fluid level is the size of the entire inner womb space that surrounds the baby? Because I don't think anyone sees where the amniotic sac begins or ends when baby is more grown. I would assume its not the shape of the womb itself but that seems to be where the measurements come from?
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