Suboptimal Fetal Cord Insertion?

A concerned momma about ultrasound:
So, my OB just uploaded my latest ultrasound report - a follow up scan after my anatomy since they couldn’t see the heat well or cord. The office is closed today and tomorrow and I cannot call and inquire about this, although I do have an appointment Thursday.
No anomalies show, but it says “the 3VV and fetal cord insertion remain suboptimal.” Has any other momma experienced this? What does “suboptimal fetal cord insertion and 3VV” mean?
I don’t want to worry but I of course took to google and it scared me lol I haven’t received a call from the office yet and they say no news is good news, right?
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