Your baby hasn’t stopped moving and turning since you first felt his first kicks. Although their motions might slow down a little when they sleep, they soon return to reassure you about their presence. As you move to the third phase of pregnancy, your baby’s position begins to stabilize gradually, till reaching the best position for delivery, with their head down and legs up.
When does this happen exactly? Is it normal if your baby has not yet adopted this position? In this article, we shall discuss the position of your baby, the development of baby movements, the factors that influence the baby to adopt the correct position, the manner by which the doctors identify the position of the fetus, and when medical intervention may be needed if the baby’s position does not change at the expected time.
Baby’s Development and Position Inside the Womb
At 28 weeks, the child measures 25 centimeters from head to heels, weighing 1.2 kilograms. The growth of the brain begins, as well as the development of fat layers beneath the skin, to help the child regulate body warmth after birth.
At this point, the examination of the position of the baby by the ultrasound will help the doctor check if the baby is positioned head down, breech, or sideways. It is important to note that many babies have not yet reached the ideal position at this point, and this can change over the next few weeks.
Common Fetal Positions
The baby may adopt several positions, but as labor draws close, some positions are considered preferable over others to permit easy delivery.
Head-Down Position (Cephalic Position)
This is the birth position where the child’s head is pointing downwards. Their back is usually in line with the back of their mother. This is the best position for delivery, since it facilitates the smooth passage of the baby through the birth canal during childbirth.
In some cases, babies take the position by the 28th week of gestation, and for others, it may take a little longer.
Breech Position
In this case, the lower part of the baby’s body (buttocks or legs) leans towards the pelvic opening, along with the head turned upwards. If the baby holds this position until labor, caesarean delivery may be necessary.
Transverse or Oblique Position
The baby lies sideways or angled, with the lower part of the body directed away from the pelvis.
These positions are not fitted for vaginal delivery and need close medical supervision.
When Does the Baby Settle into the Final Birth Position?
In most cases, the baby turns into a head-down position between weeks 32 and 36 of pregnancy. Before this time, the baby’s position was not considered a reliable indicator of the delivery position.
Studies indicate that the percentage of babies in a breech or transverse position decreases as the due date nears.
How Does the Doctor Determine the Baby’s Position?
Various methods are used to establish the position of the baby, including:
- Manual Abdominal Exam (Leopold’s manoeuvres): The physician palpates or feels the abdomen to determine the positions of the baby’s head, back, and buttocks.
- Ultrasound Scan: This scan helps to determine the position of the baby and also gives images of the head, spine, and pelvis.
Doctors may use physical examination and ultrasound together to establish the true position. In certain cases, additional tests may be used if the position is unclear, such as:
- 3D or 4D Ultrasound Scan: Gives a better view of the baby’s movement inside the womb.
- Non-Stress Test: Not used for position detection, but is normally operated to confirm the health of the baby during movement or changes of position.
- Pelvic Examination: Often done later in the pregnancy or during labor, check the position of the baby at the cervix and assesses how far the head has descended into the pelvis.
- Fetal MRI Scan: This is done in rare cases, when the baby’s position is difficult to determine, such as cases of anatomical abnormalities of the uterus, maternal obesity, or unclear findings. It provides detailed images without exposing the fetus to radiation.
These tests aid in verifying the final position of the baby and whether it is normal or needs special attention.
Can Baby Position Change After Week 28?
Yes, if there is space to move within the uterus, the baby can change its position. However, the larger the pregnancy, the less available uterine space for the baby to change its position.
Although changing position becomes less likely as the due date approaches, some babies may turn to the head-down position just before delivery.
Can You Help Your Baby Move into the Right Position?
Yes, some ways may help the baby turn into a head-down position. Although their effectiveness is not confirmed, they can help in many cases. They include:
- Maternal Positions
- Leaning slightly forward while sitting.
- Sitting on an exercise (birthing) ball.
- Practising gentle pelvic tilts or mild forward-leaning exercises.
- Maternal Physical Activity
Light walking and normal activity may facilitate the changing of the baby’s position, while avoiding prolonged sitting and continuous leg elevation.
- External Cephalic Version
How Is External Cephalic Version Performed?
This is a medical procedure where the doctor gently tries to guide the baby into a head-down position through the mother’s abdomen using their hands.
ECV is usually performed in the later weeks of pregnancy, around week 36 or later, if the baby remains in a breech position.
Certain conditions must be met before attempting this procedure, including:
- Continuous monitoring of the baby’s heart rate during and after the procedure.
- Adequate medical expertise.
- Availability of facilities for immediate intervention if complications happen, such as a well-equipped delivery room or an emergency caesarean section.
According to several studies, manual rotation successfully changes the position of the baby in about 50% of cases.
Research also shows that major risks during the procedure are rare; however, close monitoring remains essential. Complications may include:
- Early onset of uterine contractions (preterm labor).
- Changes in the baby’s heart rate.
- Maternal bleeding.
When should you seek medical intervention?
It isn’t dangerous if the baby does not adopted head-down position at week 28. However, attention is needed in the following situations:
- If the baby remains in a non-head-down position as the due date approaches
- If the baby’s position is abnormal, placing the mother or baby at risk, as in cases of too little amniotic fluid or placental problems.
How Does the Baby’s Position Affect the Mother?
When the baby is in a head-down position, the mother may feel stronger movements lower in the abdomen or pelvis. In breech or transverse positions, movements may be felt higher up or on the sides of the abdomen.
Breathing can be affected by the baby’s position. The upward positioning of the head may place additional pressure on the diaphragm and make breathing difficult.
Certain positions can also press nerves, such as the sciatic nerve, increasing back or leg pain.
Key Tips for Week 28
At this stage, don’t worry about the ideal possible position; your baby still has time to change position, but:
- Check your baby’s position with your doctor regularly by ultrasound.
- Keep healthy habits, avoid sitting for prolonged periods, and select healthy sitting positions.
- Discuss the available options with your doctor if the baby remains in a non-ideal position during the later weeks; they might recommend an ECV or a more appropriate method of delivery.
- Try to sleep on your left side as much as possible to permit blood flow to the placenta and uterus, which will also help the baby position itself properly.
In Conclusion…
The baby’s position is one of the crucial factors that determine whether delivery will be caesarean or vaginal. However, it is still too early to confirm the baby’s position. The baby’s position can change between weeks 28 and 36, so focus on supporting your health and nutrition with regular follow-ups, and discuss the available options with your doctor with awareness and confidence.