Does this sound like it'll be a vanishing twin?

Sarah

So I went to the doctors today and they saw two sacs I'm 6+3 days last week at 5 weeks and 3 days they saw two sacs but failed to tell me because I was in the ER and for some reason they didn't tell me. Anyways today they saw one yolk sac in one of the gestational sacs and not one in the other gestational sac I'm wondering if this seems like vanishing twin syndrome I go back in on Thursday. I'm just wondering what you ladies think. Has this happened to anyone else?

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