Large yolk sac

Hi ladies,

I had my first US yesterday and I'm 9 weeks today. On the US they found an enlarged yolk sac, good fetal growth normal for size,and normal heart rate. The only thing they said was that I'm going to have a miscarriage most likely because of my large yolk sac or have a baby with genetic anomalies. Has anyone else had this happen to them? I'm so upset and confused. I have a follow up US in 10 days but the wait is going to be so difficult.