Can anyone explain to me what this is? 😂

Okay so this is from 11w 2d ultrasound which was done yesterday. I was told Bub is completely healthy, & heart rate was 164. So everything looked fine!

However, I’ve been staring at this ultrasound picture for the last 24 hours, & wondering what this line is?! 😂😂 At first I thought it was the other leg, but after looking long enough I can see both legs are up.

My aunt looked at it & was like “looks like another boy”, I almost peed myself from laughing so hard, & tried to explain to her it’s too early for that 😂😂.

But now I’m making myself a little crazy thinking what is it?! 🤷🏼‍♀️😂 Anyone have any idea?