How many days of postpartum bleeding are normal?

Written by Du Rui Xia
Obstetrics
Updated on March 11, 2025
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Postpartum hemorrhage typically stops around three weeks. Lochia can be classified into bloody lochia, serous lochia, and white lochia. Another type is abnormal bleeding, which is pathological bleeding. It occurs postpartum, for instance, due to soft birth canal injuries, cervical lacerations, uterine atony, or pre-existing blood disorders, which may extend the bleeding duration even beyond a month. This abnormal condition requires prompt medical attention. Normal lochia during the initial three to four days is bloody. As the bleeding from the uterus gradually decreases, it transitions to serous lochia, which can last about ten days. Finally, it becomes white lochia, which clears up after about three weeks.

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Written by Liu Wei Jie
Obstetrics
51sec home-news-image

What are the warning signs of postpartum hemorrhage?

Postpartum hemorrhage generally does not have warning signs but usually has precipitating factors. These factors include maternal fear, psychological tension, macrosomia or twin pregnancy, as well as conditions like uterine fibroids, placental abruption, or placenta previa. In cases of placenta previa during a cesarean section, there is a high likelihood of severe bleeding. There is only one condition that might signal an impending postpartum hemorrhage, which is placental abruption. If placental abruption occurs, it can cause severe abdominal pain along with issues of hypertension during pregnancy. If a person with pregnancy-induced hypertension experiences severe abdominal pain, this could be a precursor to postpartum hemorrhage.

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Written by Liu Wei Jie
Obstetrics
1min 16sec home-news-image

The difference between postpartum hemorrhage and menstruation

The difference between postpartum hemorrhage and menstruation varies whether it is a vaginal delivery or a cesarean section. The timing of postpartum bleeding varies, and it also relates to postpartum lochia. If the bleeding occurs within 24 hours, it is called severe postpartum hemorrhage; most frequently, we encounter bleeding after 24 hours. Typically, for vaginal deliveries, bleeding occurs within seven days. In cesarean sections, due to the uterine incision, healing is needed, and the duration of bleeding varies by individual and health, commonly lasting from one to two months post-operation. Postpartum bleeding is due to incomplete healing of the uterine lining, which is different from menstrual bleeding. Menstrual bleeding is usually heavier in the initial days and the blood is dark red with a cyclic pattern. In contrast, postpartum bleeding does not have a cyclic nature; it usually consists of fresh red or dark blood, whereas menstrual bleeding typically involves dark blood.

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Written by Zhao Li Li
Obstetrics
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What are the causes of postpartum hemorrhage?

Under normal circumstances, postpartum hemorrhage is one of the most severe complications that can occur during childbirth. Postpartum hemorrhage can be caused by several reasons: The first is mainly due to uterine atony leading to bleeding, which is relatively common and generally requires the administration of potent oxytocics to promote uterine contraction; The second is mainly due to local tears in the vagina or cervix leading to bleeding; The third is primarily caused by issues such as placental adhesion or implantation; The fourth is due to disorders in the body's coagulation function, leading to uncontrolled bleeding.

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Written by Tang Mei Xiang
Obstetrics and Gynecology
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The main causes of postpartum hemorrhage

There are four main causes of postpartum hemorrhage: one is uterine atony, two is due to trauma in the soft birth canal, three is due to placental factors, and four is coagulation dysfunction. Uterine atony is the most common cause of postpartum hemorrhage clinically. Various factors can lead to uterine atony, such as maternal exhaustion during labor due to not eating, leading to physical decay, which can also cause uterine atony. Additionally, an excessively large uterus, such as from excessive amniotic fluid, twins, or triplets, can lead to poor uterine contraction and retraction rates after childbirth. As for injuries in the soft birth canal, they mainly occur due to insufficient protection of the perineum during childbirth or inappropriate use of vacuum assistance during the second stage of labor, causing trauma in the soft birth canal. Placental factors include placental adhesion, placenta accreta, partial placental abruption, and retained placenta, all of which can lead to postpartum bleeding due to placental issues.

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Written by Zhang Lu
Obstetrics
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Symptoms of Postpartum Hemorrhage

Postpartum hemorrhage is the leading cause of death in pregnant women. The symptoms of postpartum hemorrhage include the following aspects: First, it initially presents as significant vaginal bleeding, where the bleeding may exceed 500 milliliters in a short period or 800-1000 milliliters within 24 hours, predominantly featuring fresh blood. Second, there can be abdominal pain or other symptoms caused by the underlying etiology, such as postpartum hemorrhage due to soft birth canal injuries, which can manifest as tears in the vagina or cervix. Third, there can be signs of shock, such as confusion, lowered blood pressure, and an increased heart rate, all of which are symptoms used to diagnose postpartum hemorrhage.