really sorry for your loss, i am going through this at the moment, had a scan at 13 weeks and sac was there but no baby. just went to doc this morning who is a MORON and i wont be going to see him next time. anyway they did another preg test which was positive and i have just had my bloods taken and have to have another ultrasound in a week

by 13 weeks i would assume a baby would be very easy to see so not looking very good at all

good luck in the future xx