Nub Theory? Skull theory?

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Hello!

We had an ultrasound today at 13 weeks 3 days because I had been having some bleeding. Baby is perfectly fine with a heartbeat of 155.

I asked the ultrasound tech if he could take a guess at gender this early. He said he wasn’t 100% sure, but feels like “something is there” a few times when baby would move a certain way and said he would guess boy.

Now, I don’t think this photo is the correct angle to show any sort of nub, but just wondering if anyone else can see anything.

I realize we aren’t docs or ultrasound techs and this is more for fun

Thanks!