my name is Laura and I am 12 weeks pregnant. I went in for a dating sonogram today May 9-07. The doctor said everything looked great and that the baby had a heartbeat and that it was developing fine except for one concern there is a faint line on all the sonograms around the baby. She said it looks like a sac or it might be just a shadow around the baby. She is sending all the sonogram pictures to a specialist in Galveston, Texas. I am concerned and so is my husband.