Blighted Ovum

Katie • Husband and I are pregnant, due in August 2016. MC in Sept of this year
Has anyone experienced a blighted ovum pregnancy? We thought I was 11 weeks 5 days pregnant, went in for our first ultrasound.. No baby, no heartbeat. Only an empty gestational sac, and my HcG levels have nearly halfed since my first blood draw. Now there is cramping and bleeding, and my Dr says I am likely miscarrying. This is our first pregnancy. 
Looking for some support of women who may have experienced the same thing.. 💕