Cervix Posterior at 39 Weeks: What It Means for Labor and Delivery

At 39 weeks of pregnancy, the cervix is normally expected to move to the anterior position, which allows for easier dilation and effacement when you go into labor. However, in some cases, the cervix remains in the posterior position, which can cause concern for both the mother and the midwife or healthcare provider.

According to Healthline, a posterior cervix at 38 weeks pregnant is not necessarily a cause for alarm. Labor progresses differently for each woman, and it is possible that labor may not begin for several more days or weeks.

However, if the cervix remains posterior at 39 weeks or beyond, it may be more difficult for the healthcare provider to perform a cervical check and determine the status of the cervix.

If the healthcare provider is unable to perform a cervical check due to a posterior cervix, they may suggest alternative methods to assess the readiness of the cervix for labor, such as an ultrasound to measure the length of the cervix.

In some cases, a posterior cervix may also be an indication of a longer labor or a higher risk of a cesarean delivery. It is important for women with a posterior cervix at 39 weeks to discuss their options with their healthcare provider and to remain vigilant for signs of labor.

Understanding Cervix

The cervix is a narrow passage or opening between the uterus and the vagina. During pregnancy, the cervix plays a crucial role in supporting the growing fetus. It helps to keep the baby in the uterus and prevents premature labor.

The cervix is positioned in the pelvis and can be felt during a pelvic exam. It is usually positioned in a posterior position, which means it is tilted towards the back of the body. This is the normal position for most women.

However, in some cases, the cervix may be positioned in an anterior position, which means it is tilted forward towards the bladder.

At 39 weeks of pregnancy, the cervix starts to soften and thin out in preparation for labor. This process is known as effacement. The cervix may also start to dilate or open up. If the cervix is still posterior at this stage of pregnancy may make it difficult for healthcare providers to perform a cervical exam or check for dilation.

It is important to note that the position of the cervix does not affect the progress of labour or the delivery of the baby. The cervix will move forward naturally into an anterior position as labor progresses, allowing the baby to pass through the birth canal.

Therefore, having a posterior cervix at 39 weeks should not be a cause for concern.

In summary, the cervix is a vital part of a woman’s reproductive system. A posterior cervix at 39 weeks of pregnancy is a normal occurrence and should not affect the progress of labor or delivery of the baby.

Pregnancy and Cervical Changes

As pregnancy progresses, the cervix undergoes several changes to prepare for labor and delivery. One of these changes is cervical effacement, which is the thinning and shortening of the cervix.

Another is cervical dilation, which is the opening of the cervix. These changes are crucial for the baby to pass through the birth canal during delivery.

At 39 weeks of pregnancy, the cervix may be in a posterior position, which means it is tilted towards the back of the body. This position can make it difficult for healthcare providers to assess cervical dilation during a cervical check. However, a posterior cervix does not necessarily indicate a problem with the pregnancy or labor.

It is possible for a woman to be dilated and effaced even with a posterior cervix. In fact, some women may not experience any cervical changes until labor begins. Therefore, a posterior cervix should not be a cause for concern unless there are other signs of potential complications.

It is important for pregnant women to discuss any concerns or questions about cervical changes with their healthcare provider. They can provide more information about what to expect during labor and delivery and answer any questions about cervical dilation and effacement.

Posterior Cervix Position at 39 Weeks

At 39 weeks, it is common for the baby’s head to be down, and the cervix to be in a posterior position. This means that the cervix is tilted towards the back of the body, behind the baby’s head. While it is not a cause for concern, it can make active labor more challenging for some women.

If the baby is in a posterior position, it can cause back labor, which is when the mother experiences intense pain in her lower back during contractions. This is because the baby’s head is pressing against the mother’s spine and tailbone. However, not all women with a posterior cervix experience back labor.

There are several ways to encourage the baby to turn to an anterior position, which can make labor easier. One way is to spend time on all fours, which can help the baby move into a more favorable position. Another way is to sit on a birth ball and gently rock back and forth.

This can help the baby move into a better position and put pressure on the cervix, which can help it dilate.

It is important to note that not all babies will turn to an anterior position before labor. In some cases, the baby may remain in a posterior position until delivery. If this happens, it is still possible to have a safe and healthy delivery.

Your healthcare provider will monitor you and your baby closely to ensure that everything goes smoothly.

Symptoms and Signs

At 39 weeks of pregnancy, the cervix may become posterior, which means the cervix moves from behind and faces toward the back of the body. This can cause discomfort and may affect the progress of labor. Some common symptoms and signs associated with a posterior cervix at 39 weeks include:

  • Backache: Women with a posterior cervix may experience back pain due to the pressure of the baby’s head on the lower back.
  • Vaginal discharge: As the cervix prepares for labor, there may be an increase in vaginal discharge. This discharge may be thicker and more mucus-like than usual.
  • Mucus plug: The mucus plug is a thick, jelly-like substance that forms in the cervix during pregnancy to help protect the baby from infection. As the cervix begins to dilate, the mucus plug may be released, which can be a sign that labor is approaching.

It is important to note that not all women with a posterior cervix at 39 weeks will experience these symptoms. Some women may have no symptoms at all, while others may experience a combination of symptoms.

If you are experiencing any of these symptoms or have concerns about your pregnancy, it is important to speak with your healthcare provider. They can provide guidance and support as you prepare for labor and delivery.

Medical Examination and Ultrasound

At 39 weeks, your healthcare provider will likely perform a medical examination to check your cervix. During this examination, your provider will insert two fingers into your vagina to feel for the cervix. They will be checking the cervix for dilation, effacement, and position.

If your cervix is in a posterior position, it means that it is tilted towards the back of your body. This can make it more difficult for your provider to assess your cervical dilation, as they may not be able to reach the cervix as easily.

However, a posterior cervix is a normal variation and does not necessarily indicate any problems.

In addition to a medical examination, your healthcare provider may also recommend an ultrasound to check on the health and position of your baby. An ultrasound uses high-frequency sound waves to create images of your baby and uterus.

This can help your provider determine the position of your baby and ensure that they are growing and developing properly.

During an ultrasound, a technician will apply a gel to your abdomen and use a small device called a transducer to create images of your baby. You may also need a transvaginal ultrasound, which involves inserting a small wand into your vagina to obtain clearer images of your cervix and uterus.

Overall, a medical examination and ultrasound can provide valuable information about the health and position of your baby, as well as the status of your cervix. If you have any concerns or questions about these procedures, be sure to discuss them with your healthcare provider.

Labor and Delivery

As the due date approaches, the cervix softens, thins, and opens up to allow the baby to pass through the birth canal. During labor, the cervix dilates, which is measured in centimeters. The cervix must be fully dilated to 10 centimeters for the baby to be born.

Contractions are the body’s way of pushing the baby down and out of the birth canal. They can be felt as a tightening and pressure in the lower abdomen and back. Contractions can be different for every woman, but they typically become stronger and closer together as labor progresses.

When it’s time to push, the woman will feel the urge to bear down and push with each contraction. This can be an intense and exhausting process, but it’s crucial for delivering the baby. The healthcare provider will guide the woman on when and how to push effectively.

Tears can occur during delivery, especially if the baby is large or the delivery is fast. The healthcare provider will try to prevent tears by guiding the baby’s head and shoulders out slowly and supporting the perineum. In some cases, an episiotomy, a surgical cut to the vaginal opening, may be necessary to prevent tearing.

Overall, labor and delivery can be a challenging but rewarding experience for women. With proper medical care and support, women can be ready for labor, safely deliver their babies and start their journey into motherhood.

Medical Interventions

When a woman is 39 weeks pregnant and has a posterior cervix, medical interventions may be necessary to facilitate labor and delivery ( l&d ). These interventions are typically recommended by obstetricians and gynecologists in accordance with the standard of care.

Induction of Labor

If labor has not begun naturally, it may be recommended to induce labor. This is a medical procedure that involves the use of medications or other methods to initiate contractions and start labor.

The American College of Obstetricians and Gynecologists recommends induction of labor at 39 weeks for women with certain medical conditions, such as gestational diabetes or high blood pressure.

Epidural

An epidural is a common form of pain relief during labor. It involves the injection of medication into the epidural space, which numbs the lower half of the body. This can help alleviate pain and make labor more comfortable for the mother.

The decision to have an epidural is a personal one and should be discussed with a healthcare provider.

American College of Obstetricians and Gynecologists

The American College of Obstetricians and Gynecologists (ACOG) is a professional organization that provides guidance and recommendations on the standard of care for obstetric and gynecologic care.

ACOG recommends routine cervical exams during pregnancy to assess the position of the cervix and readiness for labor.

Standard of Care

The standard of care for obstetric and gynecologic care is the level of care that a reasonable and prudent healthcare provider would provide under similar circumstances. This includes following established guidelines and protocols for medical interventions, such as induction of labor or epidurals.

It is important for healthcare providers to adhere to the standard of care to ensure the best possible outcomes for the mother and baby.

Women’s Health and Well-being

During pregnancy, it is essential to prioritize women’s health and well-being. Women’s bodies undergo significant changes during pregnancy, and it is crucial to take care of both physical and mental health.

Anxiety is a common experience during pregnancy. It is essential to manage anxiety to maintain overall well-being. Some techniques that may help include deep breathing exercises, meditation, and yoga.

It is also important to seek support from friends, family, or a healthcare provider if anxiety becomes overwhelming.

Fatigue is another common symptom during pregnancy, especially during the third trimester. It is essential to get plenty of rest and prioritize sleep. Taking short naps during the day and establishing a consistent sleep routine may help reduce fatigue.

It is also important to stay hydrated and eat a balanced diet to maintain energy levels.

Regular prenatal care is crucial for women’s health during pregnancy. Prenatal appointments allow healthcare providers to monitor the health of both the mother and the developing fetus.

Women should attend all scheduled appointments and communicate any concerns or symptoms with their healthcare provider.

In conclusion, prioritizing women’s health and well-being during pregnancy is essential for a healthy pregnancy and delivery. Managing anxiety, reducing fatigue, and attending regular prenatal appointments are all important steps to take.

By taking care of both physical and mental health, women can have a positive pregnancy experience.

Potential Risks and Complications

As the due date approaches, if the position of your cervix is still very posterior, it may increase the risk of certain complications. Here are some potential risks that may arise:

Difficult Labor

A posterior cervix can make labor more difficult, as it can take longer for the cervix to dilate and for the baby to move down the birth canal. This can lead to longer labor and a higher likelihood of needing interventions such as forceps or a vacuum to assist with delivery.

Premature Birth

A posterior cervix may also increase the risk of premature birth. The cervix plays a crucial role in supporting the pregnancy by keeping the baby in the uterus until it is ready to be born. If the cervix is weak or short, it may not be able to hold the baby in place, leading to premature birth.

Placental Abruption

Placental abruption is a serious complication that can occur during pregnancy or labor. It happens when the placenta separates from the uterine wall before the baby is born. A posterior cervix may increase the risk of placental abruption, as the pressure from the baby’s head can cause the placenta to detach.

Low Amniotic Fluid

Amniotic fluid is the fluid that surrounds the baby in the uterus. It helps protect the baby and allows for movement in the womb. A posterior cervix may increase the risk of low amniotic fluid, as the baby’s head may press against the cervix and reduce the amount of fluid around the baby.

In summary, a posterior cervix at 39 weeks may increase the risk of difficult labor, premature birth, placental abruption, and low amniotic fluid. It is important to discuss any concerns with your healthcare provider and to closely monitor your pregnancy for any signs of complications.

Conclusion

In conclusion, the position of the cervix, whether posterior or anterior, is an important aspect of the labor process, though it’s just one of many factors. At 39 weeks of pregnancy, a posterior cervix is not unusual and doesn’t signify that labor is imminent or far off.

This simply reflects the cervix’s position relative to the baby and the pelvis. As labor approaches or during labor, the cervix typically moves from a posterior to an anterior position, though the timing can vary widely among individuals.

It’s important to remember that while having an anterior cervix at labor is ideal, every woman’s body and every pregnancy is unique. Regular check-ups with healthcare providers and open communication about any concerns or questions can ensure that both mother and baby are healthy and prepared for labor and delivery.

The anticipation at this stage can be high, but patience and trust in the body’s natural processes are key.

Frequently Asked Questions

 

How quickly can a posterior cervix change?

The position of the cervix can change rapidly during pregnancy, and it is not uncommon for a posterior cervix to move forward and become more anterior as labor approaches. However, it is also possible for the cervix to remain posterior until labor begins.

What does a posterior cervix mean for labor?

Having a posterior cervix at 39 weeks does not necessarily mean that labor will be delayed or more difficult. However, it may mean that labor takes longer to progress, and there may be a higher risk of interventions such as induction or assisted delivery.

Can a sweep work if the cervix is posterior?

A cervical sweep, also known as a membrane sweep, is a procedure that can help to stimulate labor. It is possible for a sweep to be successful even if the cervix is posterior, although it may be more difficult for the healthcare provider to perform the procedure.

What should the cervix be at 39 weeks?

At 39 weeks, the cervix should be soft, thin, and dilated to some degree. It is normal for the cervix to be posterior at this stage of pregnancy, but it should start to move forward and become more anterior as labor approaches.

What happens if the cervix is posterior?

If the cervix is posterior at 39 weeks, it may take longer for labor to progress, and there may be an increased risk of interventions such as induction or assisted delivery. However, having a posterior cervix does not necessarily mean that labor will be more difficult or that complications will arise.

What are the symptoms of a posterior cervix at 39 weeks?

There are typically no symptoms associated with having a posterior cervix at 39 weeks. However, some women may experience discomfort or pain in the lower back or pelvic area due to the position of the cervix. It is important to discuss any concerns with a healthcare provider.

References:

  1. merican Pregnancy Association. (2021). Stages of Labor. Retrieved from https://americanpregnancy.org/labor-and-birth/stages-of-labor/
  2. Mayo Clinic. (2021). Stages of Labor and Birth. Retrieved from https://www.mayoclinic.org/healthy-lifestyle/labor-and-delivery/in-depth/stages-of-labor/art-20046545
  3. The Royal Women’s Hospital (Australia). (2021). Changes to the cervix during pregnancy. Retrieved from https://www.thewomens.org.au/health-information/pregnancy-and-birth/a-healthy-pregnancy/changes-to-the-cervix-during-pregnancy
  4. Healthline. (2021). Posterior Cervix: What It Means If You’re Pregnant. Retrieved from https://www.healthline.com/health/pregnancy/posterior-cervix#TOC_TITLE_HDR_1
  5. American College of Obstetricians and Gynecologists. (2021). How to Tell When Labor Begins. Retrieved from https://www.acog.org/womens-health/faqs/how-to-tell-when-labor-begins
Sandy

Sandy

This post is written and edited by Sandy who is a clinical pharmacist with over 20 years of experience specializing in pre-natal and post-natal care.