Empty Gestational Sac

My husband and I are devastated. We went this past Thursday 5/23 for our first ultrasound only to come out of it with nothing. We were told they only saw a gestational sac and nothing else. Based off my LMP I was 8weeks and 5 days. They gave us hope in thinking maybe it’s just to early but there’s no way my dates are off and it’s just the “run of the mill” answer to give us the false hope before the dr actually tells us his findings. We’re stuck in limbo because my dr is out of the office for the holiday. We’ve already been through an ectopic two years ago which caused me to lose my left tube and then diagnosed with unexplained infertility so this pregnancy had us beyond excited. We are holding out hope that some how we are wrong and this isn’t a blighted ovum and it is too early to see anything but realistically we are already preparing for a loss. I’m so mad and upset with the world. It’s not fair.