9+4wk ultrasound today. Why do the sac's change shape like that? Any ideas?
I was just curious to know why the gestational sac looks so different in every ultrasound picture you see. 

Sometimes you see the round ones so I was wondering why mine was curved like that.
I wish my doctor would explain more about what I'm seeing. I'm wondering if I'm seeing the legs at bottom right - I should've asked! Any insight would be nice 😇
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