Miscarriage Causes, Symptoms, and Diagnosis

What is a miscarriage? A miscarriage (spontaneous abortion) is any pregnancy that ends spontaneously before the fetus can survive. The World Health Organization defines this unsurvivable state as an embryo or fetus weighing 500 grams or less, which typically corresponds to a fetal age (gestational age) of 20 to 22 weeks or less. Miscarriage occurs in about 15-20% of all recognized