Has anyone had a blighted ovum with yolk sac?

I have been diagnosed with a non-viable pregnancy as I should be 8.5 weeks and have had no growth since 5w6d (actually shrinking now) 😰

The OB said it’s a blighted ovum because a fetal pole never formed.. but I had a yolk sac detected.. 🤔

(And yes we’ve made sure multiple times it’s not viable - I’m not just earlier than I thought)