Too big Yolk Sac

(Ultrasound images below).

I had miscarriages before and I think this is another one.

1.) First image is 5w1d and GS measuring 3,82mm.

2.) Second image is 5w5d and GS measuring 7,3mm but too large YS measuring 3,8mm.

I see not much progression of the Gestational Sac and too big Yolk Sac.

What do you think?

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