Water running down there in late pregnancy may be urine leakage, amniotic fluid or vaginal discharge. 1. late pregnancy leakage: late pregnancy pelvic floor tissue relaxation, in pregnant women coughing, laughing when there is urine involuntarily discharged from the urethra, usually not a large amount, can stop after noticing. 2. Amniotic fluid: water breakage is the uncontrollable flow of fluid from the vagina of pregnant women, often in large quantities, even if the conscious contraction of the pelvic muscles or after urinating in the toilet can not be stopped, such as rupture of the membrane in a high position can be a small amount of continuous flow of fluids may be possible. 3. Vaginal discharge: a small amount of vaginal discharge from the vagina in late pregnancy is generally difficult to distinguish from a high level of premature rupture of membranes. Premature rupture of membranes is an indication for hospitalization of pregnant women, once vaginal discharge occurs, it is recommended to go to the hospital and follow the doctor’s instructions for treatment.