This can cause heavy vaginal bleeding as the cervix opens. Serious maternal and fetal problems may occur if normal delivery is attempted in this setting. Late in pregnancy, bleeding may be a normal sign of labor as the cervix opens. If labor begins before the 36th week of pregnancy, vaginal bleeding may occur. Other warning signs may include vaginal discharge, pelvic or lower abdominal pressure, tightening of the uterus, abdominal cramps, and diarrhea.
Prevention depends upon the cause.
Early prenatal care will allow the doctor to screen for risk factors of miscarriage, premature labor, and other problems. Eating a balanced diet rich in folate may prevent miscarriages due to genetic problems. Avoiding cigarettes, cocaine and trauma may decrease the risk of the placenta detaching. Practicing safer sex methods can help prevent sexually transmitted diseases. These are a common cause of ectopic pregnancy.