Yes - I found that I had an empty sac in January when I started bleeding at 11 weeks :(
Was spotting on the Thursday, then got up to go to the loo in the night and had a lot of fresh blood. GPs suggested that I go to A&E where I had a scan and found the empty sac (there was a very small mas at the bottom of the sac bit nothing that resembled a baby. I wasnt offered any medical management, and was sent home, however it all started that eveing anyway.
The pain & the amount of blood completely took me by surprise, was getting regular contraction like pains every 5 minuites (pretty much to the second - I started timing them just so I could relax or sleep in between) which strong pain killers didnt even touch. I was constantly going to the loo to expel the blood or change the sodden pad - that lasted two days, but eased as quickly as it started.
On the Saturday eveing, the pain had stopped but was still bleeding fairly heavily, I had only just been to the loo to clean myself up, when I stood up from being sat on the sofa, and felt "something" coming down. I dashed to the loo again and felt something about the size and shape of a large hen's plop in to the loo - I beleive that was the main event.
After that, I bled for about 1 week, with light bleeding/spotting for a further week.
I;m sorry that you are going through this, and I hope it is as quick & easy as possible for you x