Missed misscairage

Allison

So tomorrow I have my 8 week appointment. I will be 8 weeks 3 days. I had a scan 2 weeks ago and saw baby with beating heart. What are the chances of having a missed miscarriage because I am so nervous!! My pregnancy has been so different than my pregnancy with my little girl 2 years ago. I have not been sick and I still can't find my hb with Doppler.