I promised myself that I wouldn't worry about this but I had a scan on Saturday (6.5 weeks) and they saw the gestational sac but nothing in it. Has anyone had a scan around 6.5 weeks and not seen anything but saw something later? My HCG levels were at 45,000 and I thought at that point I'd be able to see something? The US tech said something about every woman's anatomy being different and that mine was just too small to see. Also I heard no heart beat, but I don't know if that's something he was looking for, as it was an emergency scan (I had cramping and spotting). Anyways I'd love to hear people's experiences with early scans. Anyone see an empty sac at 6-7 weeks then go onto see a baby and heartbeat later?