Symptoms of amniotic fluid breaking in late pregnancy include vaginal fluid flow, abdominal pain and vaginal bleeding. 1. Increased vaginal fluid flow: when the amniotic fluid breaks in late pregnancy is rupture of fetal membranes, the most typical symptom is that the pregnant woman suddenly feels that there is fluid flowing out of the vagina, when squatting or using abdominal pressure the fluid flow will increase, and fetal fat may also be seen. 2. Abdominal pain: for rupture of membranes occurring before labor, it may or may not be accompanied by irregular lower abdominal pain, but for rupture of membranes occurring after labor, it is accompanied by regular lower abdominal pain. 3. Vaginal bleeding: As the capillaries close to the cervical opening will also rupture when the membranes rupture, a small amount of vaginal bleeding can be seen. However, when there is a lot of vaginal bleeding after rupture of membranes, it is abnormal and may be due to conditions such as rupture of anterior blood vessels. It is necessary to assess the intrauterine condition of the fetus and terminate the pregnancy as soon as possible.