|If there is no dilation of the cervix, the symptoms may subside and the pregnancy may go to term. If the fetus is still alive and its attachment to the uterus has not been interrupted despite uterine bleeding and cramping, the pregnancy may continue.|
Threatened abortion may progress to profuse or prolonged vaginal bleeding, and the cervix may become thinned (effaced) or open (dilated), resulting in a spontaneous abortion. A complete abortion occurs when the entire contents of the uterus are delivered. An incomplete abortion occurs when the uterus is not entirely emptied of its contents. A missed abortion occurs when the fetus dies but is not immediately expelled. Any of these conditions may result in acute stress disorder (ASD) as a consequence of exposure to a traumatic event that arouses intense negative emotions in the person involved; anxiety and depression may continue up to 1 year following a spontaneous abortion (Griebel). However, most women who experience a spontaneous abortion are able to carry a fetus to term on subsequent pregnancies. Less than 1% of women have repeated (3 or more) miscarriages (Stenchever 429).
Source: Medical Disability Advisor