White dots on an ultra sound?

Hi all,

We just received our surrogates first ultrasound (trans abdominal) yesterday after transferring 2 five day blastocysts on the December 9th, Placing us at around 6+2.

Our doctors mention that we have one healthy sac :-)

Is anyone able to shed some light on what the white dots are in this sac? It looks like we’re having a smiley face if you ask me ;-)

Also, does this look normal for a 6w scan?