I had a dating scan last week at 7wks 5 days . Scan went well as far as I knew and heartbeat was seen 153 bpm. I went to my gp afterwards and she gave me a copy of the ultrasound report but didnt mention anything wrong. I was reading the report tonight and it said no yolk sac identified. Im really worried now and have tried to find information but can find much on a scan that shows a heartbeat but no yolk sac. Only the other way around. Does anybody know anything about this, I can't imagine that it is a good thing? I was really excited about this pregnancy but now I'm really worried.