Hi all. I'm approximately 9weeks preggo and the doctor just called to inform me that the ultrasound wasn't able to find the yolk sac. I had the ultrasound at around 7 weeks. She said the size and heartrate of the baby was good, I believe the heartrate was around 160. She said the machine was old and there is a possibility that it just could not see it, so I'm due back on Friday for another as well as bloodwork. The question I have is: What kind of problems can I run into when no yolk sac is present? How will this affect my baby? Just any information really would be great, I'm a tad worried! Thanks so much, Katie.