How much blood is normal during first trimester

If you’ve had bleeding early in your pregnancy, you’re not alone. Many other pregnant women have early bleeding, too. And in most cases, nothing is wrong. But your healthcare provider still needs to know about it. They may want to do tests to find out why you’re bleeding. Call your provider if you see bleeding during pregnancy. Tell your provider if your blood is Rh negative. Then they can figure out if you need anti-D immune globulin treatment.

What causes early bleeding?

The cause of bleeding early in pregnancy is often unknown. But many factors early on in pregnancy may lead to light bleeding (called spotting) or heavier bleeding. These include:

  • Having sex

  • When the embryo implants on the uterine wall

  • Bleeding between the sac membrane and the uterus (subchorionic bleeding)

  • Pregnancy loss (miscarriage)

  • The embryo implants outside of the uterus (ectopic pregnancy)

If you see spotting

Light bleeding is the most common type of bleeding in early pregnancy. If you see it, call your healthcare provider. Chances are, they will tell you that you can care for yourself at home.

If tests are needed

Depending on how much you bleed, your healthcare provider may ask you to come in for some tests. A pelvic exam, for instance, can help see how far along your pregnancy is. You also may have an ultrasound or a Doppler test. These imaging tests use sound waves to check the health of your baby. The ultrasound may be done on your belly or inside your vagina. You may also need a special blood test. This test compares your hormone levels in blood samples taken 2 days apart. The results can help your provider learn more about the implantation of the embryo. Your blood type will also need to be checked to assess if you will need to be treated for Rh sensitization. 

Warning signs

If your bleeding doesn’t stop or if you have any of the following, get medical care right away:

  • Soaking a sanitary pad each hour

  • Bleeding like you’re having a period

  • Cramping or severe belly pain

  • Feeling dizzy or faint

  • Tissue passing through your vagina

  • Bleeding at any time after the first trimester

Questions you may be asked

Bleeding early in pregnancy isn't normal. But it is common. If you’ve seen any bleeding, you may be concerned. But keep in mind that bleeding alone doesn’t mean something is wrong. Just be sure to call your healthcare provider right away. They may ask you questions like these to help find the cause of your bleeding:

  • When did your bleeding start?

  • Is your bleeding very light or is it like a period?

  • Is the blood bright red or brownish?

  • Have you had sex recently?

  • Have you had pain or cramping?

  • Have you felt dizzy or faint?

Monitoring your pregnancy

Bleeding will often stop as quickly as it began. Your pregnancy may go on a normal path again. You may need to make a few extra prenatal visits. But you and your baby will most likely be fine.

Contrary to how it may seem, bleeding during pregnancy is actually common. About 25% of pregnant women experience some form of bleeding or spotting during pregnancy. This doesn’t always indicate there is an issue, but it should be monitored. This could be a sign of complications or a miscarriage before 20 weeks of pregnancy. Keeping in contact with your healthcare provider during this time will help you navigate bleeding during pregnancy.

Bleeding Vs Spotting: What’s the Difference?

Spotting is considered light bleeding. This might mean a few drops of blood at a time. Spotting during early pregnancy is normally not a concern. However, if the blood is heavy enough to cover a panty liner, that is considered ‘bleeding’. This type of flow is usually heavy enough to soak your clothes. Talk to your healthcare provider about heavier bleeding. They may want to set up an exam or perform an ultrasound to determine if the cause is something underlying. 

Why Do You Bleed During Pregnancy?

Bleeding during pregnancy can be an indicator of a lot of things. At some point during your pregnancy, you may experience bleeding or spotting. This happens for many reasons – commonly in the first trimester. Although, bleeding can also be a sign of an underlying issue or complication. If you are experiencing any symptoms of the sort, it’s a good idea to share them with your healthcare provider so they can help you determine if this is something to look into. But! No reason to panic, many women experience bleeding during pregnancy and go on to have a seamless birth and healthy baby. 

If you start to experience any kind of bleeding during pregnancy, call your healthcare provider. In the meantime here are a few to help your healthcare provider have the most information about the situation:

  • Check the color of the blood. Blood can vary in color. Take note if you are experiencing bright red, dark or brown blood. 
  • Keep track of how heavy the flow is. Does it fluctuate between heavy and light? How many pads or panty liners have you used?
  • Make sure to avoid tampons, douches and intercourse when you are bleeding during pregnancy. 

If you start to experience any of the following, call your healthcare provider immediately or go to the emergency room:

  • Bleeding with pain or cramping
  • Very heavy bleeding
  • Pain in your abdomen or pelvis
  • Bleeding and dizziness

Bleeding and Spotting In The First Trimester

Spotting or bleeding in the first trimester is fairly common and normally doesn’t indicate a major issue. There are many reasons you might experience this in the first trimester. Some of those reasons could be: 

  • Implantation – this means the fertilized egg is starting to attach itself to the lining of the uterus to begin growing
  • Hormone fluctuations
  • Intercourse
  • Changes in the cervix
  • An Infection – infections such as gonorrhea, chlamydia, UTIs, and other STIs can cause light bleeding and need to be treated by your healthcare provider
  • Problems in relation to smoking. Smoking should be avoided during pregnancy
  • Certain tests during pregnancy. CVS and amniocentesis for example. These tests are done to check for genetic abnormalities in your baby that affect the baby’s genetics. Some genetic abnormalities passed down to the baby from mom or dad can cause health problems.
  • Cervical polyps – a benign growth on the cervix that can bleed during pregnancy. Normally due to increased estrogen levels

Other times, bleeding can be a symptom of a much larger problem. Some of those issues can be:

  • Ectopic pregnancy: this is when a pregnancy starts to form outside of the uterus, for instance, the fallopian tubes. This can not only be serious, but life-threatening. An ectopic pregnancy cannot result in the birth of the baby
  • Molar pregnancy: this condition is rare but possible. This is when a fertilized egg implants in your uterus, but instead of a baby forming – it becomes a tumor/mass tissue
  • Subchorionic hematoma: this is when one of the membranes that surround the embryo inside your uterus. This can also resolve on their own
  • Miscarriage: this is the loss of pregnancy before 20 weeks. Miscarriages can start with light bleeding and then gets heavier over time accompanied by severe cramping.

Bleeding and Spotting in the Second or Third Trimester

Bleeding after the first trimester is often caused by a more serious condition. If you start to bleed in the second or third trimester, speak to your healthcare provider so they’re aware of your symptoms and can help you plan what to do next. 

Here are a few reasons that you might be bleeding during your second and third trimester:

Placental Abruption: this is a rare condition but can be very dangerous for both the mother and the fetus. This is when the placenta detaches from the wall of the uterus. 

Placenta Previa: this is another rare condition that is even more rare after 20 weeks of pregnancy. This is when the placenta covers all or part of your cervix.

Placenta Accreta: this happens when the placenta grows deep into the wall of the uterus

Uterine Rupture: this is a rare occurrence when the uterus tears during labor. This can happen if you have previous scarring from a poor c-section birth for instance. 

Incompetent Cervix: this is when the cervix opens too early and causes premature labor.

Preterm Labor: this can be defined by other symptoms other than bleeding like, cramping, contraction or rupturing membranes. In addition, bleeding can be a sign of premature labor which is defined as labor occuring earlier than 37 weeks. 

Bloody Show: this means the bleeding is mixed with mucus. This normally happens at the end of the pregnancy and is a sign that the body is preparing for labor.

Miscarriage: however, a miscarriage after the 20th week of pregnancy is normally labeled a stillbirth.

How Much Bleeding Is Normal In Pregnancy?

Early on in pregnancy, spotting is often a normal symptom and nothing to be overly concerned with. Regardless of how common it is, it’s important to let your healthcare provider know and ensure there isn’t more to take into consideration. 

Although spotting or bleeding can look different for everyone, if, at any time during your pregnancy you start to experience bleeding that resembles menstruation contact your healthcare provider right away. Menstruation type bleeding meaning: a steady flow of blood that lasts several days. At no point should that bleeding also be accompanied by pain. 

When talking to your healthcare provider, take note of what the blood looks like so they can help you evaluate your symptoms. Some details could include: 

  • The consistency of your blood. Is it thick or more watery? Is the flow accompanied by clots?
  • The color of your blood. Is the blood more pink or red? Maybe it’s more of a brown color?
  • The amount of blood. Is it a few more drops than normal? Are you filling a panty liner or pad?

Details like these will help your healthcare provider figure out the level of care you might need at the time and how urgent your situation could be. 

Is Bleeding and Spotting Treated?

Treatment is entirely based on the situation. Depending on what caused the bleeding, and the symptoms surrounding the bleeding will all determine if treatment is necessary. At times, healthcare providers might use medical exams and tests to help determine their next recommendation. 

There are many times that the treatment recommended is just rest. Aside from rest, common treatments could also be:

  • Medication to help protect the baby from Rh disease. A disease that means the baby and the mother’s blood are incompatible. 
  • Time off work and bedrest
  • Heavy bleeding may mean a hospital stay or surgery
  • Avoiding douches, tampons and sex

When it comes to bleeding during pregnancy, it is best to follow the recommendations from your doctor. Try to avoid activities like rigorous movement and exercise and use a pad or panty liner to help contain the bleeding.

Bleeding During Pregnancy? Call Rosh Maternal and Fetal Medicine for Complete Access Obstetric Care

Here at Rosh Maternal & Fetal Medicine, we’re committed to making sure all our expectant moms can reach us any time of day and any day of the week to report potential problems, discuss pressing concerns, or ask a simple question.

As such, you can always get in touch with one of our experienced obstetricians for prompt advice if you happen to experience spotting or bleeding during any trimester.

To learn more, call our Manhattan, New York City office today, or use the easy online tool to schedule a visit with one of our board-certified obstetricians.

How much bleed is normal during early pregnancy?

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.

When should I worry about first trimester bleeding?

1st trimester Contact your health care provider immediately if you have moderate to heavy vaginal bleeding, pass tissue from your vagina, or experience any amount of vaginal bleeding accompanied by abdominal pain, cramping, fever or chills.

What is considered heavy bleeding first trimester?

Severe bleeding means you are soaking through your usual pads or tampons each hour for 2 or more hours. For most women, soaking through their usual pads or tampons every hour for 2 or more hours is not normal and is considered severe.

Is a small amount of blood at 6 weeks pregnant normal?

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.

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