Anyone know what the circle in the top right could be?

It's basically an area where the cross section didn't reflect back the ultrasound. Can just be a dimple, or fluid, or something else. Best thing is to ask a doc as they'll know what is relevant in this cross section and in relation to the rest of the scan.

@Holly thank you for replying 💕 I have zoomed really close into the picture haha I don’t think it’s anything to worry about as there was one main consultant and a senior student consultant, an assistant and a student in for my scan and I’m sure they would’ve noticed it in the picture

Ahh yeah if it was even slightly unusual or interesting they'd have highlighted for the students