possible blighted ovum....

According to glow I should be 8 weeks 4 days today but when I went in for a sono 14 days ago I barely measured 5. Went in for another today and they said I measure 6 weeks 4 days but the sac is empty. They said its most likely a blighted ovum. I'm confused because I've had morning sickness, and headaches, and sore breasts, and grogginess, and back pain, and basically all the things I had with my first two pregnancies but now they are saying I'm not pregnant. Has anyone been through this? What happens next? Did you get pregnant again soon? I already have some baby stuff and quite a few very close family and friends know. The idea of telling them kills me but the idea of telling my 6 yo makes me want to die. I feel so broken. It's just devastating.