Miscarriage is defined as the spontaneous loss of a pregnancy before 24 weeks' gestation, that is, before the fetal viability. The clinical signs of miscarriage are usually vaginal bleeding associated abdominal pain and cramping . The miscarriage is named 'complete' or 'incomplete' according to whether or not tissues are retained in the uterus. If a woman has minimal bleeding but her cervix is closed, this is known as a 'threatened miscarriage. However; if the pregnancy is still inside the uterus but the cervix is open, this is described as an 'inevitable miscarriage', which it will not usually be possible to save the fetus.