Can someone tell me what I'm looking at?

Im supposed to be about 5 weeks and some days. He hasn't told me exact dates yet. He said the 2 dots in the middle of the white blob are both sacs. Hes saying its possibly twins. (One could just be fluid so im not getting my hopes up for twins yet) If the ones inside are sacs what is outside the white??? This is the most confusing ultrasound I've ever had.