What are the causes of bleeding during early pregnancy

Vaginal bleeding - NHS

Bleeding during pregnancy is relatively common and does not always mean there's a problem – but it can be a dangerous sign.

Urgent advice: Call your midwife or GP immediately if:

• you have any bleeding from your vagina

Causes of bleeding in early pregnancy

Implantation bleeding

In early pregnancy, you might get some harmless light bleeding, called "spotting". This is when the developing embryo plants itself in the wall of your womb. This type of bleeding often happens around the time your period would have been due.

Cervical changes

Pregnancy can cause changes to the cervix, and this may sometimes cause bleeding – after sex, for example.

Miscarriage or ectopic pregnancy

During the first 12 weeks of pregnancy, vaginal bleeding can be a sign of miscarriage or ectopic pregnancy.

However, if you bleed at this stage of pregnancy it's likely you will go on to have normal and successful pregnancies.

Treating bleeding in early pregnancy

You may be offered a medicine called progesterone to stop bleeding in early pregnancy. This will only be recommended if you've had a scan to confirm you're pregnant and you've had a miscarriage before.

Your doctor may recommend you take the medicine twice a day until you're 16 weeks pregnant.

Miscarriage

If a pregnancy ends before the 24th week, it's called a miscarriage. Around 1 in 5 pregnancies ends this way.

Many early miscarriages (before 14 weeks) happen because there is something wrong with the baby. There can also be other causes of miscarriage, such as hormone or blood clotting problems.

Most miscarriages occur during the first 12 weeks (3 months) of pregnancy and, sadly, most cannot be prevented. Other symptoms of miscarriage include:

• cramping and pain in your lower abdomen
• a discharge or fluid from your vagina
• a discharge of tissue from your vagina
• no longer experiencing the symptoms of pregnancy, such as feeling sick

If you have bleeding or any of the symptoms above, contact your midwife or GP straightaway.

Ectopic pregnancy

An ectopic pregnancy is when a fertilised egg implants outside the womb – for example, in the fallopian tube.

It can cause bleeding and is dangerous because the fertilised egg cannot develop properly outside the womb. The egg has to be removed, which can be done through an operation or with medicines.

Symptoms of an ectopic pregnancy tend to develop in the 6th week of pregnancy but can happen later.

Other signs of ectopic pregnancy can include:

• tummy pain low down which may be on one side
• vaginal bleeding or a brown, watery discharge
• pain in the tip of your shoulder
• discomfort when peeing or pooing

Call 111 if you have symptoms of an ectopic pregnancy.

Causes of bleeding in later pregnancy

Cervical changes

These can lead to bleeding, particularly after sex.

Vaginal infections

Your midwife or doctor can discuss tests and treatment with you.

A 'show'

This is when the plug of mucus that has been in the cervix during pregnancy comes away, signalling that the cervix is getting ready for labour to start. It may happen a few days before contractions start or during labour itself.

Find out about the signs of labour and what happens in labour.

Placental abruption

This is a serious condition in which the placenta starts to come away from the womb wall. Placental abruption usually causes stomach pain, and this may occur even if there is no bleeding.

Low-lying placenta (placenta praevia)

This is when the placenta is attached in the lower part of the womb, near to or covering the cervix. Bleeding from a low-lying placenta can be very heavy, and put you and your baby at risk.

You may be advised to go into hospital for emergency treatment, and a caesarean section will usually be recommended. The Royal College of Obstetricians and Gynaecologists has more information on placenta praevia.

Vasa praevia

This is a rare condition where the baby's blood vessels run through the membranes covering the cervix.

When your waters break, these vessels may be torn and cause vaginal bleeding. The baby can lose a life-threatening amount of blood.

Finding out the cause of bleeding in pregnancy

To work out what is causing the bleeding, you may need to have a vaginal or pelvic examination, an ultrasound scan or blood tests to check your hormone levels.

Your doctor will also ask you about other symptoms, such as cramp, pain and dizziness. Sometimes it might not be possible to find out what caused the bleeding.

If your symptoms are not severe and your baby is not due for a while, you'll be monitored and, in some cases, kept in hospital for observation.

How long you need to stay in hospital depends on the cause of the bleeding and how many weeks pregnant you are.

Being in hospital allows staff to keep an eye on you and your baby, so they can act quickly if there are further problems.

Find the answers to common health problems in pregnancy

Video: What should I do if I start bleeding during early pregnancy?

In this video, a midwife tells you what to do if you start to bleed during early pregnancy.

Media last reviewed: 20 March 2020
Media review due: 20 March 2023

Vaginal Bleeding and Blood Clots During Pregnancy

Written by Stephanie Watson

In this Article

• Bleeding in the First Trimester
• Bleeding in the Second and Third Trimesters
• What to Do If You Have Abnormal Bleeding During Pregnancy

Bleeding during pregnancy is common, especially during the first trimester, and usually it's no cause for alarm. But because bleeding can sometimes be a sign of something serious, it's important to know the possible causes, and get checked out by your doctor to make sure you and your baby are healthy.

Bleeding in the First Trimester

About 20% of women have some bleeding during the first 12 weeks of pregnancy. Possible causes of first trimester bleeding include:

Implantation bleeding. You may experience some normal spotting within the first six to 12 days after you conceive as the fertilized egg implants itself in the lining of the uterus. Some women don't realize they are pregnant because they mistake this bleeding for a light period. Usually the bleeding is very light and lasts from a few hours to a few days.

Miscarriage. Because miscarriage is most common during the first 12 weeks of pregnancy, it tends to be one of the biggest concerns with first trimester bleeding. However, first trimester bleeding does not necessarily mean that you’ve miscarried or will miscarry. In fact, if a heartbeat is seen on ultrasound, over 90% of women who experience first trimester vaginal bleeding will not miscarry.

Other symptoms of miscarriage are strong cramps in the lower abdomen and tissue passing through the vagina.

Ectopic pregnancy. In an ectopic pregnancy, the fertilized embryo implants outside of the uterus, usually in the fallopian tube. If the embryo keeps growing, it can cause the fallopian tube to burst, which can be life-threatening to the mother. Although ectopic pregnancy is potentially dangerous, it only occurs in about 2% of pregnancies.

Other symptoms of ectopic pregnancy are strong cramps or pain in the lower abdomen, and lightheadedness.

Molar pregnancy (also called gestational trophoblastic disease). This is a very rare condition in which abnormal tissue grows inside the uterus instead of a baby. In rare cases, the tissue is cancerous and can spread to other parts of the body.

Other symptoms of molar pregnancy are severe nausea and vomiting, and rapid enlargement of the uterus.

Additional causes of bleeding in early pregnancy include:

• Cervical changes. During pregnancy, extra blood flows to the cervix. Intercourse or a Pap test, which cause contact with the cervix, can trigger bleeding. This type of bleeding isn't cause for concern.
• Infection. Any infection of the cervix, vagina, or a sexually transmitted infection (such as chlamydia, gonorrhea, or herpes) can cause bleeding in the first trimester.

Bleeding in the Second and Third Trimesters

Abnormal bleeding in late pregnancy may be more serious because it can signal a problem with the mother or baby. Call your doctor as soon as possible if you experience any bleeding in your second or third trimester.

Possible causes of bleeding in late pregnancy include:

Placenta previa. This condition occurs when the placenta sits low in the uterus and partially or completely covers the opening of the birth canal. Placenta previa is very rare in the late third trimester, occurring in only one in 200 pregnancies. A bleeding placenta previa, which can be painless, is an emergency requiring immediate medical attention.

Placental abruption. In about 1% of pregnancies, the placenta detaches from the wall of the uterus before or during labor and blood pools between the placenta and uterus. Placental abruption can be very dangerous to both the mother and baby.

Other signs and symptoms of placental abruption are abdominal pain, clots from the vagina, tender uterus, and back pain.

Uterine rupture. In rare cases, a scar from a previous C-section can tear open during pregnancy. Uterine rupture can be life-threatening, and requires an emergency C-section.

Other symptoms of uterine rupture are pain and tenderness in the abdomen.

Vasa previa. In this very rare condition, the developing baby's blood vessels in the umbilical cord or placenta cross the opening to the birth canal. Vasa previa can be very dangerous to the baby because the blood vessels can tear open, causing the baby to bleed severely and lose oxygen.

Other signs of vasa previa include abnormal fetal heart rate and excessive bleeding.

Premature labor. Vaginal bleeding late in pregnancy may just be a sign that your body is getting ready to deliver. A few days or weeks before labor begins, the mucus plug that covers the opening of the uterus will pass out of the vagina, and it will usually have small amounts of blood in it (this is known as "bloody show"). If bleeding and symptoms of labor begin before the 37th week of pregnancy, contact your doctor right away because you might be in preterm labor.

Other symptoms of preterm labor include contractions, vaginal discharge, abdominal pressure, and ache in the lower back.

Additional causes of bleeding in late pregnancy are:

• Injury to the cervix or vagina
• Polyps
• Cancer

What to Do If You Have Abnormal Bleeding During Pregnancy

Because vaginal bleeding in any trimester can be a sign of a problem, call your doctor. Wear a pad so that you can keep track of how much you're bleeding, and record the type of blood (for example, pink, brown, or red; smooth or full of clots). Bring any tissue that passes through the vagina to your doctor for testing. Don't use a tampon or have sex while you are still bleeding.

Your doctor might recommend that you rest as much as you can and avoid exercise and travel.

You should expect to receive an ultrasound to identify what the underlying cause of your bleeding may be. Vaginal and abdominal ultrasounds are often performed together as part of a full evaluation.

Go to the emergency room or call 911 right away if you have any of the following symptoms, which could be signs of a miscarriage or other serious problem:

• Severe pain or intense cramps low in the abdomen
• Severe bleeding, with or without pain
• Discharge from the vagina that contains tissue
•  Dizziness or fainting
• A fever of more than 100.4 or more degrees Fahrenheit and/or chills

Health & Pregnancy Guide

1. Getting Pregnant
2. First Trimester
3. Second Trimester
4. Third Trimester
5. Labor and Delivery
6. Pregnancy Complications
7. All Guide Topics

Pathological and physiological causes of bleeding during early pregnancy

The gestation period is a complex process that does not always go well. Every second woman has various complications. Most often, women go to the doctor with complaints of spotting. Why does bleeding occur during early pregnancy, how dangerous is it?

Causes of bleeding in pregnancy

Blood in the first trimester of pregnancy in the vaginal secretion is observed in 30% of expectant mothers. Bleeding can be weak, spotting, plentiful.

Most often, blood during early pregnancy is observed during implantation of the fetal egg. When the egg is attached, the vessels are often damaged, which leads to the appearance of blood secretions. They are similar to menstruation, last 1-2 days. This process is considered natural, does not indicate any pathologies.

Any bloody discharge during early pregnancy is a reason for an urgent appeal to a gynecologist. Even if there is no additional discomfort. At a remote consultation, our doctor will collect an anamnesis, draw up a clinical picture in order to identify the cause of bleeding. And he will select effective methods to eliminate the problem.

Blood during pregnancy - other common causes

In addition to the main ones, there are some other reasons why pathology can develop.

Bleeding in the first trimester can be caused by causes that appear at any gestational age. These are fibroids, polyps in the uterus and cervical canal, cardiovascular pathologies that are associated with a weakening of the endothelium.

Physiological or pathological bleeding during gestation - differences

Clinical manifestations of bleeding in pregnant women depend on the causes. Physiological discharge of blood from the genital tract in the early stages of gestation proceeds without deterioration in well-being. With bleeding caused by erosion, fibroids and polyps, there are also no additional discomfort. In this case, only a few drops of blood are released, it bleeds for a short time.

Abundant bleeding, similar to menstruation, against the background of a general satisfactory condition, occurs with a deficiency of progesterone.

Bleeding with spontaneous interruption is accompanied by constant or periodic pain in the lumbar region, abdomen. Disturbed by nausea, bouts of dizziness, slightly increased body temperature. Bleeding can be weak or intense, and clots are often observed in the discharge.

When a fertilized egg is fixed outside the uterus, internal bleeding often occurs, and discharge from the genital tract may appear much later. Characteristic manifestations - acute pain in the abdomen radiates to the anal region, right or left side, blood pressure decreases, cold sweat appears, fainting is possible. Significant blood loss leads to the development of a state of shock with a high probability of death.

Learn more about implantation bleeding

Why does it bleed at the initial stages of gestation? Most often, the appearance of spotting during pregnancy is associated with the implantation of the embryo. They occur 6-12 days after conception and are often one of the first signs of conception.

Usually, the appearance of spotting at the beginning of pregnancy coincides with the time of the onset of menstruation, if the cycle is regular. But discharge in pregnant women is not as abundant as menstrual bleeding. Duration - from several hours to three, with the first pregnancy up to 5 days.

How does implantation bleeding manifest?

• weak, pulling pain in the lower abdomen;
• headache, dizziness;
• sudden change of mood;
• bouts of nausea;
• increased sensitivity, swelling of the mammary glands;
• fatigue, drowsiness.

Important! When the embryo is implanted, little blood is released, usually these are small spots. The discharge may be pink, brown, orange, and there should be no clots.

Possible causes of early bleeding by week

The first months of pregnancy are the most difficult and dangerous. It is in the early stages that various pathologies and complications often appear.

Why blood may appear in the early stages during pregnancy:

1. At the 4th week of pregnancy, discharge with an admixture of blood may appear - this is implantation bleeding. Heavy bleeding is a dangerous sign, most often indicates a miscarriage. Spontaneous abortion can be caused by exercise, fever, infections, drugs or alcohol. Such bleeding is profuse, painful, blood clots are present.
2. The appearance of sanious discharge at the 5th week of pregnancy may be a sign of a missed pregnancy. The reasons are overwork, Rh conflict, bad habits, bacterial and viral diseases of the reproductive system, genetic disorders in the embryo. Symptoms - causeless fever, severe pain in the lower back and lower abdomen, the disappearance of signs of toxicosis.
3. Blood in the discharge at the 6th week of pregnancy appears with an ectopic attachment of the fetal egg, fetal fading, Rhesus conflict. Discharge with blood at 6 weeks of pregnancy is a reason for an urgent visit to the gynecologist.
4. At the 7th week of pregnancy, discharge with blood is not the norm. May indicate a miscarriage, missed or ectopic pregnancy.
5. From the 8th week of pregnancy, one of the most dangerous periods of pregnancy begins. The formation of the placenta begins, the hormonal background changes. Bloody discharge appears with the threat of miscarriage or spontaneous abortion. Pregnancy is often not saved.

Pay attention! In the second trimester, bleeding occurs only in 5-10% of women. Most often this is due to late spontaneous abortion, isthmic-cervical insufficiency. The appearance of blood in the third trimester mainly occurs with presentation, placental abruption.

Early bleeding after IVF

The appearance of blood discharge during pregnancy on the 8-10th day after IVF is not considered a pathology, provided that the woman feels normal. After the introduction of the embryo into the uterine cavity, minor damage to the small uterine vessels often occurs. Brown, dark cream, pale pink, odorless discharge most often indicates a successful transplant, pregnancy.

If spotting after IVF is observed for 1-2 days, slight pulling pains in the lower abdomen are disturbing, this may be due to a progesterone deficiency. After the examination, the doctor will adjust the hormonal maintenance therapy.

Pink discharge on the 16th day after the transfer is a dangerous symptom. It may be a sign of detachment of the fetal egg, the threat of termination of pregnancy.

According to studies, uterine bleeding in the first trimester is a common occurrence in pregnancy after IVF. Discharge does not affect the incidence of adverse reproductive outcomes. The number of embryo rejections in women with and without uterine bleeding is approximately the same. Consult with our doctors by phone for more details.

Diagnostics

If blood has gone from the genitals of a pregnant woman, the doctor conducts an external and gynecological examination.

Analyzes and examinations:

• general and biochemical blood test;
• general urine analysis;
• tests for hCG, other hormones;
• Ultrasound of the pelvic organs;
• CTG is performed to assess the vital activity of the fetus.

Treatment

Methods of treatment depend on the results of the examination.

Bloody discharge in the first trimester - causes and therapeutic measures:

Complications and consequences

It is impossible to ignore bloody impurities in vaginal discharge during pregnancy. Without proper and timely assistance, the following complications may occur:

• miscarriage;
• intrauterine fetal death;
• the development of an infectious process, sepsis due to the remainder of dead tissues in the uterine cavity;
• profuse blood loss can lead to death.

Important! Urgent medical attention is needed in case of heavy bleeding, discharge of bright scarlet blood, presence of blood clots in the discharge. In life-threatening and fetal conditions, severe pain in the abdomen, lower back, convulsions, profuse cold sweat, and loss of consciousness are disturbing.

Methods of prevention

If there is blood in the first trimester, it is important to remain calm. Stress and anxiety will only exacerbate the situation. But any health problem is easier to prevent than to treat.

How to avoid bleeding during childbearing - recommendations from a gynecologist:

• eat right and balanced, give up junk and junk food, eat more fresh vegetables and fruits;
• observe the drinking regime;
• in the absence of contraindications, moderate physical activity is indicated - yoga, swimming, special gymnastics for pregnant women;
• more time to walk in the fresh air;
• avoid stress, overwork, observe the daily routine, get enough sleep;
• give up bad habits, do not be in smoky rooms;
• timely visit a gynecologist;
• according to the doctor's prescription, take vitamin complexes for pregnant women;
• do not self-medicate.

The prognosis for bleeding during gestation depends on the causes and timely visit to the doctor. Properly provided medical care can save the life of the fetus and the woman.

FAQ

Why is there blood from the genital tract during gestation?

+

The causes of bleeding in early pregnancy are different. Most often, spotting appears when the fetal egg is fixed, progesterone deficiency, with erosion of the cervix and polyps. Dangerous causes - ectopic, molar, miscarriage, miscarriage.

What to do if there is bleeding during pregnancy?

+

Much depends on the amount of blood released, general well-being. If the bleeding is not strong, not for long, the general condition is normal, it is enough to lie down and rest. Write down the date of the attack, inform the doctor at the next visit. But if even slight spotting during early pregnancy lasts more than 72 hours, is accompanied by cramping or acute pain, fever, you should immediately visit a gynecologist or call an ambulance.

How can you recognize a miscarriage?

+

With the threat of interruption, spotting is scanty, pain in the lower abdomen is absent or may be dull, aching. The condition is considered reversible, with timely treatment, pregnancy can be saved. If a miscarriage has begun, bleeding intensifies, cramping pain appears. The general condition is satisfactory. Urgent hospitalization is required, the probability of maintaining pregnancy is decided on an individual basis.

Expert opinion:

Bleeding during pregnancy is a dangerous symptom. Sometimes spotting can be caused by physiological reasons. But often such a symptom appears in life-threatening conditions for the woman and the fetus.

We publish only verified information

Article author

Menshikova Maria Viktorovna obstetrician-gynecologist

Experience 38 years

Consultations 1816

Articles 46

Specialist with extensive practical experience. He has a certificate of a mammologist, a certificate of professional certification. Participates in foreign business trips and individual training programs (Los Angeles).

• 1982 - 1986 NPO MONIIAG - obstetrician-gynecologist
• 1987 - 1989 VNITs OZMIR - obstetrician-gynecologist
• 1989 - 1992 departmental polyclinic st. Moscow - Kurskaya - obstetrician-gynecologist
• 1992 - 2001 NPO MONIIAG - obstetrician-gynecologist
• 2007 - 2008 NP KMIKM - doctor administrator
• 2009 - 2013 Pereslavl Central District Hospital, women's consultation - obstetrician-gynecologist
• 2020 to present Teledoctor24 LLC - doctor - consultant (gynecologist)

Early and late pregnancy and bleeding

Get test results

1. Home
2. How to recognize the disease
3. Pregnancy and childbirth
4. Bleeding during pregnancy

More about doctor

Bleeding during early and late pregnancy

Bleeding at various stages of pregnancy is a pathological symptom. Its appearance requires additional research methods aimed at clarifying the cause and selecting therapy.

Causes of bleeding during pregnancy

The only physiological cause of bleeding in the early stages may be the manifestation of implantation of the ovum in the uterine cavity. Pathological causes will depend on the gestational age.

In the early stages bleeding can be caused by:

• Complete or partial detachment of the ovum.
• Placenta previa.
• Fetal death.
• Pathology of hemostasis or Rhesus conflict.

Second trimester bleeding is rare. The reasons may be:

• Placenta previa.
• Spontaneous fetal death.
• Isthmic-cervical insufficiency.

In the third trimester bleeding occurs as a result of:

• Premature detachment of a normally located placenta.
• Offers placenta.

Diagnosis

To clarify the cause of bleeding during pregnancy, it is necessary to find out the patient's complaints, the conditions for their occurrence, as well as possible provoking factors. The doctor evaluates the nature of menstrual and reproductive function.

After a vaginal examination, additional examination methods are prescribed, which include:

• Examination of the hormonal profile with the determination of the level of human chorionic gonadotropin, as well as progesterone. A discrepancy between the level of v-hCG and the term may indicate fetal death or an ectopic pregnancy.
• Blood test for Rh factor, as well as the determination of antibodies. With a negative Rh mother, a threat may develop due to increasing antibodies against the fetal organism.
• Coagulogram. The evaluation of the coagulation system is carried out in order to exclude pathologies of hemostasis.
• Ultrasound . A non-invasive method is used to visualize the placenta, fetus, and determine the blood flow between the mother and fetus. With the help of ultrasound, it is possible to set the exact date, as well as exclude fetal growth retardation or malformations, and calculate the heart rate.
• Cardiotocography. A non-invasive study is ordered to evaluate the vital signs of the fetus by recording the heart rate.

Treatment

If the disease is caused by fetal death, curettage of the uterine cavity or induction of labor is performed.

In case of partial detachment of membranes, hemostatic and hormonal treatment is prescribed.

Isthmic-cervical insufficiency involves surgical intervention with suturing of the cervix, as well as hormonal treatment with progesterone drugs.

Premature abruption of a normally located placenta, as well as uterine rupture, is an indication for emergency operative delivery.

Learn more

• 
  How to tell if your child is mildly autistic
• 
  When will i feel baby movements
• 
  Can you feel your baby kick at 20 weeks
• 
  Bleeding a little bit while pregnant
• 
  Swollen lips pregnant
• 
  How much should 10 month old weigh
• 
  How long does it take to get child support in missouri
• 
  Allergies during pregnancy first trimester
• 
  Second trimester baby growth
• 
  Feeling full pregnancy
• 
  Cleft lip is an example of a congenital disorder