Gestational sac and yolk sac visible, no fetal pole

Hope

The gestational sac is at 13.83mm.

Yolk sac is visible

No fetal pole was seen.

As per LMP, pregnancy is at 7 weeks

But as per gestational sac, pregnancy is at 5w 4d Is such a difference common?

Doctor suggested to do the scan again in 2 weeks. But what seems to be the probability of a viable pregnancy?

Please y'all, I need some success stories.