A miscarriage is a pregnancy that occurs without intention . The driver uterine embryo or fetus before 22 weeks gestational age of 20 , or pregnancies that end before 37 completed weeks of gestation and baby ever born is called a miscarriage . If the fetus died at birth or before birth is called stillbirth . Both miscarriage and stillbirth is not considered a miscarriage 30 percent to 50 percent of fertilization survive the first quarter. While the rest of abortion, since women are unaware of their pregnancy. And pregnant many times before medical abortion to detect embryo. Pregnancy is detected, it will end with abortion own 15-30 percent of the health and life of pregnant women. Because of abortion, most (percentage. 50) in the first quarter is a