What is the chance of seeing a yolk sac in the gestational sac at 5 weeks but no baby develops around 8weeks?

Sorry for your loss!: The risk of first trimester miscarriage after gestational sac is visible is 12-15%. I'm sorry for your loss.

What did your doc sa: If that is the case it means u have a blighted ovum or a non viable pregnancy since u should be able to see a htbeat by 7 weeks gestation, and if u are not having any bleeding or cramping , u could wait 1 week and do another scan to confirm , but if u have had 2 ultrasound already , then u do not need to wai, t but ask your OB doc, once u know for certain it is non viable it needs to be removed.