12w scan Nub+Skull

Hey Everyone,
I have my 12w1d scan, there is a lot of confusion clouding my jusdgement, plz help with the shot, confusion in nub or chord,

I honestly don't know what I'm seeing, but I'll say boy skull

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Hey thanks for the insight, this nub thing is all very overwhelming i guess, any more insights to the scan

i cant see the nub hun xx

Would that mean that its the umb cord than, was expecting it to b the nub though. Keep the insight coming ladies .....