A miscarriage is a pregnancy that ends by itself within the first 20 weeks, and it is usually because the pregnancy is not developing normally.
Some experts estimate that half of all fetilized eggs die and are miscarried.
Most times it is even before a woman knows she is pregnaut. Of the pregnancies women know about and have been medically confirmed, approximately 10 percent to 20 percent end in miscarriage. This makes miscarriage very common then. In many cases, miscarriage is considered a natural-selection process because in most cases it is ending a prenancy that would not have developed into a normal, healthy baby. Often cases of miscarriage is only of placental tissue and a fetus was yet to even be formed.