Most women can instead have their first scan at 11 to 13 weeks — this is usually called the 12-week scan. This scan can work out the due date and gestational age of the baby, if youre having more than one baby and also screen for conditions like Down syndrome.

What does an empty sac at 6 weeks mean?

Whats Going On? No yolk sac at 6 weeks of gestation may mean either that the pregnancy is less than 6 weeks along or there has been a miscarriage. Having another ultrasound in one to two weeks can determine if the pregnancy is viable or not.