Is there a chance your dates are off and your bleeding last week was just implantation? I think it is a really good idea that they want to recheck next week. Are you still bleeding? I had a missed miscarriage, I went in for my 7 week scan and the baby was way behind and there was a heart beat but barely visible even with transvaginal. I knew my dates 100%.. Dr didn't seem concerned even though I freaked out because I knew something was wrong, I insisted she do another ultrasound and two weeks late my baby had grown but there was no longer a heartbeat, we did do a recheck the next week to confirm and then did a d&C. it was a very traumatic and heartbreaking time.. I'm so sorry you have to go through this! There can still be hope though, I read so many stories of success when I was going through this where the baby measured behind and then "caught up" and was healthy.. So don't loose hope yet! Keep us updated!!