I had a miscarriage in 2014 and they told me that I had empty sac and there was no heart beat but I was bleeding very badly at that time
I was told I had an empty sac waited a week and then they saw a baby I was so scared just like u now I'm 9weeks
Again, even thou I've had a miscarriage I've not been through what you are, I am so sorry that this is happening, yes i have heard to women going back and their was a foetus in the sack, but we are here for you. X
I've had two miscarriages. I've not been in your exact situation, but I have heard of women only seeing a sack going back in a week and there being a baby. I hope everything works out.