Postpartum hemorrhage, often abbreviated as PPH, is excessive bleeding after childbirth. It can occur immediately after delivery or develop later during postpartum recovery. Because blood loss can progress rapidly, early recognition and urgent treatment are essential.
Warning signs may include heavy or rapidly increasing vaginal bleeding, large clots, dizziness, faintness, weakness, a rapid heartbeat, pale or clammy skin, breathing difficulty, or feeling suddenly very unwell. Delayed postpartum hemorrhage may also present as bleeding that becomes heavier again after it had started improving.
Quick Answer
Postpartum hemorrhage is heavy bleeding after birth. Primary PPH occurs within the first 24 hours, while secondary PPH occurs after 24 hours and up to 12 weeks postpartum. The most common immediate cause is poor uterine contraction, but retained placental tissue, birth trauma, and clotting problems can also cause severe bleeding.
Call your local emergency service for very heavy bleeding, fainting, confusion, severe weakness, chest pain, breathing difficulty, collapse, or bleeding accompanied by a rapid heartbeat and pale or clammy skin. Do not drive yourself if you are dizzy, faint, or severely unwell.
What Is Postpartum Hemorrhage?
Some vaginal bleeding is expected after both vaginal and cesarean birth. This normal discharge, called lochia, gradually changes in color and amount as the uterus heals.
Postpartum hemorrhage is bleeding that is excessive, causes symptoms of circulatory compromise, or requires urgent medical treatment. Clinicians assess not only the measured volume of blood but also blood pressure, heart rate, symptoms, laboratory results, and the person's overall condition.
PPH can happen even when no major risk factor was identified before birth. For this reason, maternity teams prepare to recognize and treat hemorrhage during every delivery.
For a broader overview of postpartum healing, bleeding patterns, pain, wound care, and urgent symptoms, read our postpartum recovery guide.
Primary vs Secondary Postpartum Hemorrhage
| Type | Timing | Common concerns |
|---|---|---|
| Primary PPH | Within the first 24 hours after birth | Uterine atony, retained placenta, genital-tract trauma, clotting abnormalities |
| Secondary PPH | After 24 hours and up to 12 weeks postpartum | Retained tissue, uterine infection, delayed healing of the placental site, clotting problems |
A person can lose a significant amount of blood before blood pressure drops. A rapid heartbeat, dizziness, weakness, pallor, altered alertness, or increasing bleeding may appear first.
Normal Postpartum Bleeding vs Dangerous Bleeding
Normal lochia is usually heaviest during the early postpartum period and then gradually becomes lighter. It may temporarily increase with activity or breastfeeding because the uterus contracts.
Bleeding becomes more concerning when it suddenly becomes much heavier, repeatedly soaks pads, produces large clots, is accompanied by pain or fever, or makes the person feel faint or unwell.
| More consistent with expected lochia | Needs urgent assessment |
|---|---|
| Bleeding gradually becomes lighter | Bleeding suddenly becomes much heavier |
| Small clots may occur early | Repeated large clots or continuous flow |
| No faintness or circulatory symptoms | Dizziness, fainting, weakness, rapid heartbeat, clammy skin |
| No fever or worsening uterine pain | Fever, worsening pelvic pain, foul-smelling discharge |
Postpartum Hemorrhage Symptoms and Warning Signs
- Heavy or rapidly increasing vaginal bleeding
- Blood flowing continuously rather than gradually slowing
- Large or repeated blood clots
- Dizziness, lightheadedness, or fainting
- Rapid heartbeat or palpitations
- Weakness, confusion, or extreme fatigue
- Pale, cool, or clammy skin
- Shortness of breath or chest discomfort
- Low blood pressure or collapse
- Increasing pelvic pain, fever, or foul-smelling discharge in delayed cases
The urgency of bleeding depends on the amount, speed, symptoms, and clinical condition. Seek emergency help for fainting, severe weakness, breathing difficulty, confusion, or collapse even when you are unsure how much blood has been lost.
Illustrated Maternal & Newborn Resource
Understand Maternal Emergencies With Clear Visual Learning
Study postpartum hemorrhage, placental disorders, preeclampsia, gestational diabetes, labor complications, postpartum recovery, breastfeeding, and newborn assessment in one illustrated digital resource.
Available in English, French, German & Dutch.
Explore the Maternal & Child Health eBookWhat Causes Postpartum Hemorrhage?
Healthcare professionals often organize the main causes using the “Four Ts”: Tone, Trauma, Tissue, and Thrombin.
| Cause | Meaning | Examples |
|---|---|---|
| Tone | The uterus does not contract firmly enough | Uterine atony, overdistended uterus, prolonged labor |
| Trauma | Bleeding from injured tissue | Cervical or vaginal tears, surgical bleeding, uterine rupture |
| Tissue | Placental tissue remains in the uterus | Retained placenta, retained fragments, placenta accreta spectrum |
| Thrombin | Blood does not clot normally | Preexisting or acquired clotting disorders, severe obstetric complications |
Uterine atony
Uterine atony is the most common cause of primary PPH. After the placenta separates, the uterus normally contracts and compresses the blood vessels at the placental site. When it remains soft and poorly contracted, bleeding can continue.
Retained placental tissue
If the placenta or fragments remain inside the uterus, effective contraction may be impaired. Retained tissue can also contribute to secondary hemorrhage and infection.
Birth trauma
Lacerations of the cervix, vagina, or perineum may bleed even when the uterus is firm. Cesarean birth and other procedures can also create surgical bleeding.
Clotting problems
Severe hemorrhage can consume clotting factors, and certain pregnancy complications can cause abnormal clotting before or during bleeding. Laboratory monitoring and blood-product replacement may be required.
Risk Factors for Postpartum Hemorrhage
PPH may occur without warning, but risk can be higher with:
- Previous postpartum hemorrhage
- Multiple pregnancy
- A very large baby or excessive amniotic fluid
- Long or very rapid labor
- Induction or augmentation of labor
- Operative vaginal birth
- Cesarean birth
- Placenta previa or placenta accreta spectrum
- Placental abruption
- Retained placenta
- Uterine fibroids
- Maternal anemia
- Blood-clotting disorders
- Severe preeclampsia or other major obstetric complications
Learn more about two important placental risk conditions in our guides to placenta previa and placental abruption.
How Is Postpartum Hemorrhage Diagnosed?
Diagnosis and treatment happen at the same time. The team estimates or measures blood loss, checks uterine tone, examines for tears, evaluates placental completeness, monitors vital signs, and obtains laboratory tests.
Assessment may include
- Measurement or quantitative estimation of blood loss
- Blood pressure, pulse, oxygen level, and mental status
- Abdominal examination and uterine massage
- Inspection for vaginal, cervical, or surgical bleeding
- Review of the delivered placenta
- Complete blood count and clotting tests
- Blood type and cross-match
- Ultrasound when retained tissue is suspected
A normal early hemoglobin result does not always reflect the full extent of acute blood loss. Clinical symptoms and repeated testing remain important.
Emergency Treatment of Postpartum Hemorrhage
Treatment is rapid, organized, and based on the cause. Several interventions may occur at the same time.
Immediate measures may include
- Calling an obstetric hemorrhage response team
- Uterine massage
- Medication that helps the uterus contract
- Intravenous fluids
- Blood and blood-product transfusion
- Treatment of clotting abnormalities
- Repair of cervical, vaginal, perineal, or surgical tears
- Removal of retained placental tissue
- Uterine balloon tamponade
- Interventional radiology procedures in selected facilities
- Emergency surgery when bleeding continues
Tranexamic acid may be used early as part of treatment when clinically appropriate. The exact sequence depends on the cause, severity, response to initial measures, available resources, and whether the bleeding followed vaginal or cesarean birth.
- Bleeding continues despite medication and less invasive treatment.
- A major tear, rupture, or surgical source is identified.
- Placenta accreta spectrum prevents safe placental separation.
- Maternal life is at immediate risk.
Can hysterectomy be necessary?
In rare, life-threatening cases, removal of the uterus may be required to stop bleeding when other measures fail. This is generally a last-resort emergency treatment.
Illustrated Maternal & Newborn Resource
Build Confidence in Postpartum and Obstetric Care
Our illustrated eBook connects pregnancy, labor, hemorrhage, placental complications, postpartum recovery, breastfeeding, fetal development, and newborn care through structured explanations and medical illustrations.
Available in English, French, German & Dutch.
View the Illustrated eBookSecondary or Delayed Postpartum Hemorrhage
Secondary PPH occurs after the first 24 hours and up to 12 weeks after birth. It may begin after the person has already returned home.
Possible signs
- Bleeding that becomes heavier again after improving
- Sudden bright-red bleeding
- Large or repeated clots
- Fever or chills
- Increasing pelvic or lower-abdominal pain
- Foul-smelling vaginal discharge
- Dizziness, weakness, or rapid heartbeat
Common causes include retained placental tissue and uterine infection. Evaluation may involve examination, blood tests, ultrasound, antibiotics, medication to contract the uterus, or a procedure to remove retained tissue.
Myth: Dangerous postpartum bleeding can happen only in the hospital immediately after birth.
Fact: Secondary PPH can begin days or weeks later. New heavy bleeding, large clots, fever, worsening pain, faintness, or weakness requires prompt assessment.
Recovery After Postpartum Hemorrhage
Recovery varies according to blood loss, transfusion, surgery, anemia, infection, birth complications, and emotional impact.
Physical recovery may involve
- Repeat blood counts
- Iron treatment or, in selected cases, additional transfusion
- Fatigue management and gradual return to activity
- Nutrition containing iron, protein, folate, and vitamin C
- Monitoring for infection or recurrent bleeding
- Follow-up after surgery or intensive-care admission
Severe fatigue, shortness of breath, palpitations, headache, dizziness, or poor exercise tolerance may indicate significant anemia and should be discussed with a healthcare professional.
For nutrition guidance during pregnancy and recovery, see our pregnancy nutrition guide.
Emotional recovery
An unexpected hemorrhage, emergency procedure, transfusion, separation from the baby, or intensive-care stay can be traumatic. Some people experience anxiety, intrusive memories, sleep difficulty, fear of another pregnancy, or symptoms of post-traumatic stress.
A birth debrief, mental-health support, peer support, and trauma-informed postpartum care may help. Seek urgent help for thoughts of self-harm, harming the baby, severe confusion, hallucinations, or inability to stay safe.
Future Pregnancies After PPH
A previous postpartum hemorrhage increases the likelihood of another PPH, but recurrence is not certain. Tell the maternity team about the previous event early in the next pregnancy.
Future planning may include correcting anemia before delivery, reviewing the cause of the previous hemorrhage, arranging birth in an appropriate facility, preparing blood products when necessary, and creating an individualized prevention plan.
Postpartum Hemorrhage at a Glance
| Topic | Key point |
|---|---|
| Definition | Excessive bleeding after birth that requires urgent recognition and treatment. |
| Primary PPH | Occurs within 24 hours after birth. |
| Secondary PPH | Occurs after 24 hours and up to 12 weeks postpartum. |
| Main causes | Tone, trauma, retained tissue, and clotting problems. |
| Treatment | Medication, fluids, blood products, repair, tissue removal, balloon tamponade, or surgery. |
| Emergency action | Call emergency services for heavy bleeding, fainting, breathing difficulty, confusion, or collapse. |
Frequently Asked Questions
What is postpartum hemorrhage?
Postpartum hemorrhage is excessive bleeding after childbirth that may cause symptoms, circulatory instability, anemia, or the need for urgent medical treatment.
When can postpartum hemorrhage occur?
Primary PPH occurs within 24 hours after birth. Secondary PPH occurs after 24 hours and up to 12 weeks postpartum.
What is the most common cause?
Uterine atony, when the uterus does not contract firmly enough after birth, is the most common cause of primary postpartum hemorrhage.
How do I know whether postpartum bleeding is too heavy?
Bleeding that rapidly increases, repeatedly soaks pads, produces large clots, or occurs with dizziness, faintness, weakness, breathing difficulty, or a rapid heartbeat requires urgent assessment.
Can PPH happen after a cesarean birth?
Yes. Postpartum hemorrhage can occur after vaginal or cesarean birth. Causes may include uterine atony, surgical bleeding, retained tissue, or clotting problems.
Can delayed postpartum hemorrhage happen weeks later?
Yes. Secondary PPH can occur up to 12 weeks postpartum. New heavy bleeding, large clots, fever, pain, foul-smelling discharge, dizziness, or weakness needs prompt evaluation.
Can breastfeeding cause dangerous bleeding?
Breastfeeding can trigger normal uterine contractions and a temporary increase in lochia. It should not cause ongoing heavy bleeding, faintness, or other signs of hemorrhage.
How is postpartum hemorrhage treated?
Treatment may include uterine massage, medicines, intravenous fluids, blood products, repair of tears, removal of retained tissue, balloon tamponade, radiology procedures, or surgery.
Will I need a blood transfusion?
Not everyone needs a transfusion. The decision depends on blood loss, symptoms, laboratory results, ongoing bleeding, and the response to treatment.
Can postpartum hemorrhage cause anemia?
Yes. Major blood loss can cause iron-deficiency anemia, leading to fatigue, dizziness, palpitations, headache, breathlessness, and reduced exercise tolerance.
Can postpartum hemorrhage happen again?
A previous PPH increases recurrence risk, but another hemorrhage is not inevitable. Early planning helps the maternity team prepare prevention and emergency measures.
Can PPH affect milk supply?
Severe blood loss, anemia, stress, separation from the baby, or certain hormonal complications may delay or reduce milk production. Early lactation and medical support can help.
Can postpartum hemorrhage be prevented?
Not every case is preventable. Active management after birth, antenatal anemia treatment, risk assessment, and a prepared obstetric team can reduce risk and improve response.
When should I call emergency services?
Call immediately for very heavy bleeding, fainting, collapse, confusion, breathing difficulty, chest pain, severe weakness, or pale and clammy skin.
Final Thoughts
Postpartum hemorrhage can occur immediately after delivery or later during postpartum recovery. It is treatable, but rapid recognition matters.
Do not dismiss new heavy bleeding, large clots, faintness, worsening weakness, fever, pelvic pain, foul-smelling discharge, breathing difficulty, or a rapid heartbeat. Contact maternity services promptly, and call emergency services for severe symptoms or collapse.
Continue Reading
- Placental Abruption: Symptoms and Emergency Treatment
- Placenta Previa During Pregnancy
- Preeclampsia During Pregnancy
- Gestational Diabetes
- Signs of Labor
- Postpartum Recovery Guide
- Breastfeeding Guide for New Mothers
- Newborn Care Guide
- Pregnancy Nutrition Guide
- Fetal Development Week by Week
- Healthy Weight Gain During Pregnancy
- Common Pregnancy Discomforts
- Early Signs of Pregnancy
Illustrated Maternal & Newborn Resource
Master Maternal & Child Health in Four Languages
Explore pregnancy, labor, postpartum emergencies, placental disorders, breastfeeding, newborn assessment, and fetal development with structured explanations and clinical illustrations.
Available in English, French, German & Dutch.
Get the Maternal & Child Health eBookMedical disclaimer: This article is for general educational purposes only. It does not diagnose or exclude postpartum hemorrhage and does not replace emergency assessment, blood tests, transfusion decisions, surgery, postpartum follow-up, or individualized guidance from qualified healthcare professionals.
Educational references:
- American College of Obstetricians and Gynecologists — Postpartum Hemorrhage
- ACOG — Conditions to Watch for After Childbirth
- Royal College of Obstetricians and Gynaecologists — Heavy Bleeding After Birth
- NHS — What Happens Straight After Birth?
- World Health Organization — Prevention, Diagnosis and Treatment of Postpartum Haemorrhage