The first months of the pregnancy are a critical period. The embryo develops and settles into the wall of the uterus. Sadly, this doesn’t always happen the way it should. In that case, the result is a miscarriage.
A miscarriage is the loss of a non-viable embryo in the first period of the pregnancy. The embryo can die due to several reasons and subsequently be expelled. This happens more often than you might think: 15 to 20% of all diagnosed pregnancies end in a miscarriage.
In case of a very early miscarriage, growth has been stopped early on in the pregnancy, an embryo never developed. On the ultrasound we will only see an empty amniotic sac. If the miscarriage occurs at a later stage, in which the embryo has grown, we will see an embryo without a heartbeat.