Baby stopped growing...

Brandi
I had my first sonogram yesterday I am suppost to be 10 weeks but my sonogram showed a 4-5 wks embryo. I have no idea if there was a heartbeat. The radiologist told me that the baby is not progressive the way it should be. Next wensday I have an appointment with my obgyn to see what's happening with the baby. I don't know if anyone has had any simular experience like this but I am terrified to think that the baby might not survive. Can anyone please give me advice... maybe even some hope..