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    twins or not
    sptder0317 posted:
    My daughter in law is expecting and twins are common in her family. She had an ultrasound and it showed the baby and another sack. The doctor told her it is a yolk and will go away in time. I have seen many ultrasound and have never seen this or even heard of it. If anyone else has please let me know. I was just wondering if this could be a twin
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    candy352 responded:
    Usually if the ultrasound is a little early, the sac will still be there. That is where the baby gets its nutrients from until the umbilical cord is formed.

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