Missed miscarriage

Cassandra
Have any of you ladies had a missed miscarriage? I've had one spontaneous and the last one was missed. The thing I found most scary about it was everything seemed fine. I was symptomatic, my hormone levels were fine, no bleeding, nothing unusual. Just no heartbeat. Anxious doesn't even begin to describe how I feel waiting for my sono next week. I've had them monitoring my hormones and they're fine and I'm super sick, but there's no way of knowing until we see the ultrasound..