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Miscarriage
URL of this page: https://medlineplus.gov/miscarriage.html

Miscarriage

Also called: Spontaneous abortion
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Summary

What is a miscarriage?

A miscarriage is an unexpected loss of pregnancy before the 20th week. Most miscarriages happen very early in the pregnancy, often before a woman even knows she is pregnant.

What causes a miscarriage?

A miscarriage can happen in any pregnancy. Most miscarriages occur because the fetus doesn't develop properly. This is often linked to a genetic problem with the fetus, such as an extra or missing chromosome.

In many cases, the cause of a miscarriage is unknown. Some possible factors that may increase the chance of a miscarriage can include:

  • Problems with the uterus or cervix
  • Chronic diseases, including polycystic ovary syndrome
  • Genetic problems with the fetus
  • Pregnancy after 35 years of age
  • Smoking, drug or alcohol use
  • Certain chronic (long-term) health conditions, such as uncontrolled diabetes
  • Severe malnutrition

What are the signs of a miscarriage?

The signs of a miscarriage may be different for everyone and can vary based on how far along you are in your pregnancy.

Signs of a miscarriage can include:

  • Vaginal spotting or bleeding with or without pain. Some women may have some spotting in early pregnancy and don't miscarry. To be sure, contact your provider right away if you have any bleeding.
  • Dark-colored vaginal discharge.
  • A gush of fluid or tissue from your vagina.
  • Cramping or pain in your abdomen (belly) or lower back.

Sometimes, it's hard to know what's normal during pregnancy. If something seems unusual or is worrying you, talk to your provider.

How is a miscarriage diagnosed?

To check if you have had a miscarriage, your provider may do the following:

  • A pelvic exam to check your cervix.
  • Blood tests to check things such as the amount of blood loss and confirm pregnancy.
  • An ultrasound to check the fetus.

What is the treatment for a miscarriage?

Treatment after a miscarriage often depends on when it occurs during the pregnancy. If you miscarry early in your pregnancy, you may not need any treatment. If you are 12 or more weeks pregnant, you may need a shot to prevent problems with the Rh factor in future pregnancies.

In some cases, tissue is left in the uterus. If you don't have any signs of infection, your provider may recommend waiting for the tissue to pass naturally. If you need treatment to remove the tissue, it can include:

  • Medicines
  • A procedure called dilatation and curettage (D&C) or vacuum aspiration

No matter when it occurs, losing a pregnancy can be difficult. Counseling may help you cope with your grief. Later, if you decide to try to get pregnant again, talk with your provider to understand any risks. Many women who have a miscarriage go on to have healthy pregnancies later.

Can a miscarriage be prevented?

Miscarriage can affect anyone and often can't be prevented. Focus on taking good care of yourself and start prenatal care visits early in your pregnancy.

NIH: National Institute of Child Health and Human Development

Start Here

  • About Pregnancy Loss (Before 20 Weeks of Pregnancy) From the National Institutes of Health (Eunice Kennedy Shriver National Institute of Child Health and Human Development)
  • Dealing with Grief after the Death of Your Baby (March of Dimes Foundation)
  • Miscarriage (Mayo Foundation for Medical Education and Research)
  • Miscarriages (Nemours Foundation) Also in Spanish
  • Pregnancy Loss (Department of Health and Human Services, Office on Women's Health) Also in Spanish

Diagnosis and Tests

  • How Do Health Care Providers Diagnose and Treat Pregnancy Loss (Before 20 Weeks of Pregnancy)? From the National Institutes of Health (Eunice Kennedy Shriver National Institute of Child Health and Human Development) Also in Spanish
  • Hysteroscopy From the National Institutes of Health (National Library of Medicine) Also in Spanish
  • Progesterone Test From the National Institutes of Health (National Library of Medicine) Also in Spanish
  • Sonohysterography Video (American College of Radiology; Radiological Society of North America) Also in Spanish

Prevention and Risk Factors

  • Miscarriage (March of Dimes Foundation)

Treatments and Therapies

  • Dilation and curettage (D&C) (Mayo Foundation for Medical Education and Research)

Related Issues

  • Diethylstilbestrol (DES) Exposure and Cancer From the National Institutes of Health (National Cancer Institute) Also in Spanish
  • Other FAQs About Pregnancy Loss (Before 20 Weeks of Pregnancy) From the National Institutes of Health (Eunice Kennedy Shriver National Institute of Child Health and Human Development) Also in Spanish
  • Pregnancy After Miscarriage: What You Need to Know (Mayo Foundation for Medical Education and Research) Also in Spanish

Specifics

  • Bleeding and Spotting from the Vagina during Pregnancy (March of Dimes Foundation) Also in Spanish
  • Blighted Ovum: What Causes It? (Mayo Foundation for Medical Education and Research) Also in Spanish

Genetics

  • Recurrent hydatidiform mole: MedlinePlus Genetics From the National Institutes of Health (National Library of Medicine)

Statistics and Research

  • PeriStats (Perinatal Statistics) (March of Dimes Foundation)

Clinical Trials

  • ClinicalTrials.gov: Abortion, Spontaneous From the National Institutes of Health (National Institutes of Health)
  • ClinicalTrials.gov: Fetal Death From the National Institutes of Health (National Institutes of Health)
  • ClinicalTrials.gov: Gestational Trophoblastic Disease From the National Institutes of Health (National Institutes of Health)
  • ClinicalTrials.gov: Hydatidiform Mole From the National Institutes of Health (National Institutes of Health)

Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)

  • Article: Definition and diagnostic criteria of retained products of conception following first-trimester...
  • Article: Oral microbiome dysbiosis in women with a history of pregnancy loss:...
  • Article: Association of hyperuricemia with higher miscarriage rates and lower live birth...
  • Miscarriage -- see more articles

Find an Expert

  • Compassionate Friends
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development From the National Institutes of Health Also in Spanish
  • How to Find Find an Ob-Gyn (American College of Obstetricians and Gynecologists)
  • March of Dimes Foundation Also in Spanish

Women

  • Miscarriage (March of Dimes Foundation)

Patient Handouts

  • D and C (Medical Encyclopedia) Also in Spanish
  • HCG blood test - quantitative (Medical Encyclopedia) Also in Spanish
  • Miscarriage (Medical Encyclopedia) Also in Spanish
  • Miscarriage - threatened (Medical Encyclopedia) Also in Spanish

Topic Image

Miscarriage

MEDICAL ENCYCLOPEDIA

  • Choriocarcinoma
  • D and C
  • D and C - series
  • Gestational trophoblastic disease
  • HCG blood test - quantitative
  • Hydatidiform mole
  • Miscarriage
  • Miscarriage - threatened
  • Serum progesterone

Related Health Topics

  • Ectopic Pregnancy
  • Stillbirth

National Institutes of Health

The primary NIH organization for research on Miscarriage is the Eunice Kennedy Shriver National Institute of Child Health and Human Development

Other Languages

Find health information in languages other than English on Miscarriage

Disclaimers

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The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.

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