Hi Kelly, sorry to hear of your worrying time
The same did happen to me, unfortunately not with happy results I'm afraid. But having said that, I was always measuring 2 weeks behind my dates, so that is a big difference. As already said, it could be that you ovulated later than usual (when did you get a positive result?). Scans this early on always seem to be a cause for worry, and not entirely accurate I don't think. I never had any bleeding, was scanned at 6, 8 and 9.5 weeks. Saw a slow heartbeat at week 8, but by the final scan it had gone
Anyway try to remain positive as there are many stories of this type with happy outcomes. Pregnancies develop at different rates so it could easily catch up. A friend of mine was put back 2 weeks at her 12 week scan, then the baby came 5 weeks early weighing nearly 7lbs!
I know exactly how you're feeling, but unfortunately there is nothing you can do but try to keep positive for the sake of your little one. It hasn't given up yet!
Good luck with the next scan - let us know how it goes x