Pregnancy Week 24
Pregnancy Week 24
What to expect on pregnancy week 24
Pregnancy Week 24 brings continued fetal growth and maturation. The skin remains thin and wrinkled, kicks and turns are increasingly noticeable, body fat continues developing and the lungs and nervous system keep preparing for later stages of pregnancy.
Pregnancy Week 24 Overview
This week, the baby will start to gain bone and muscle mass, and other miscellaneous tissues and organs will grow. The baby will grow roughly six ounces this week and should be one and one third pounds by the end of week 24.
Your uterus is going to be a couple inches above your belly button now.
Understanding Pregnancy Week 24
Pregnancy Week 24 is the final week of the sixth month in some pregnancy-month groupings and remains part of the second trimester.
The NHS describes the fetus as around 30 centimeters from head to heel, approximately the size of a corn on the cob.
Mayo Clinic gives a crown-to-rump length of approximately 21 centimeters, or 8.25 inches, and a weight of more than 1⅓ pounds, or about 630 grams.
During Weeks 21 through 24, ACOG highlights stronger kicks and turns, a developing sucking reflex, fat formation beneath the skin and formation of the skin ridges that later become fingerprints and footprints.
Important Clarification About the Original Week 24 Guide
Your original Week 24 material has been preserved exactly above. Several statements benefit from current medical context.
Bone and Muscle Development Did Not Start at Week 24
The original guide says the fetus starts gaining bone and muscle mass during this week.
Bones and muscles have been developing for much longer.
ACOG describes hardening of the long bones during Weeks 13 through 16, while coordinated limb movement has also been developing throughout the second trimester.
At Week 24, bones, muscles and connective tissues continue growing and maturing rather than beginning for the first time.
A Weight of Around 1⅓ Pounds Is Reasonable
The original guide gives a Week 24 weight of approximately one and one-third pounds.
Mayo Clinic gives a current estimate of more than 1⅓ pounds, or around 630 grams.
ACOG gives a somewhat broader month-based estimate of approximately 1½ pounds by the end of Week 24.
These small differences are normal because week-by-week growth figures are approximations rather than exact targets.
Exactly Six Ounces of Weekly Growth Is Not Required
The original content says that the fetus will gain roughly six ounces during Week 24.
Actual fetal weight gain is continuous and individual.
A fetus does not need to gain one exact number of ounces between two calendar weeks in order to be developing normally.
“Couple Inches Above the Belly Button” Is Only an Approximation
By Week 24 the uterus has risen above the belly button, but a fixed distance of a couple of inches does not apply to every pregnancy.
Healthcare professionals increasingly use fundal height rather than an informal inches-above- the-navel estimate.
How Big Is the Fetus at Pregnancy Week 24?
Current authoritative references use different measurement methods.
The NHS gives a Week 24 measurement of approximately 30 centimeters from head to heel.
Mayo Clinic gives approximately 21 centimeters crown-to-rump.
The Mayo Clinic weight estimate is around 630 grams, or more than 1⅓ pounds.
Bone Development During Pregnancy Week 24
Fetal bones continue growing and maturing throughout this stage.
Bone development began much earlier in pregnancy, with cartilage gradually hardening into bone.
ACOG identifies significant hardening of the long bones during Weeks 13 through 16.
By Week 24, the growing skeleton provides increasing structural support for the developing muscles and stronger fetal movement.
The skull remains very different from a mature adult skull and will remain flexible through birth.
Muscle Growth and Stronger Movement
Fetal muscles continue developing and working together with the nervous system.
ACOG describes stronger kicks and turns during Weeks 21 through 24.
These increasingly recognizable movements reflect continued growth of the limbs, joints, muscles and motor-control systems.
Kicks can become increasingly clear and forceful.
The arms and hands continue moving toward the face and body.
The fetus continues rolling and changing position inside the uterus.
Developing nervous-system control supports increasingly coordinated movement.
What Does Fetal Skin Look Like at Week 24?
Mayo Clinic describes the fetal skin at Week 24 as wrinkled and see-through.
It may have a pink or reddish appearance because blood is visible through vessels beneath the still-thin skin.
The fetus has not yet accumulated enough subcutaneous fat to produce the smooth appearance seen later in pregnancy.
ACOG identifies fat formation beneath the skin as an ongoing feature of Weeks 21 through 24.
Body Fat Development at Pregnancy Week 24
Small amounts of fat are forming beneath the fetal skin during this period.
This process will become increasingly important later in pregnancy.
Additional fat eventually helps smooth the skin and contributes to temperature regulation after birth.
At Week 24, however, the fetus remains relatively lean.
Lung Development During Pregnancy Week 24
The lungs remain one of the most important developing organ systems during Week 24.
ACOG notes that the lungs continue developing throughout Weeks 21 through 24.
The fetus can make breathing-like movements, but it does not breathe air inside the uterus.
Oxygen continues reaching the fetal circulation through the placenta.
The lungs still require substantial development before they are ready to function independently outside the uterus.
Sucking Reflex at Pregnancy Week 24
The sucking reflex continues developing during Weeks 21 through 24.
The fetus may bring a hand toward the face or mouth and may suck a thumb.
These movements provide practice for feeding-related functions that will be needed after birth.
A fetus does not need to be seen thumb-sucking on ultrasound for this development to be normal.
Fingerprints and Footprints Continue Forming
Ridges continue developing on the fetal hands and feet.
ACOG explains that these ridges later form the distinctive patterns known as fingerprints and footprints.
These tiny skin structures continue maturing along with the fingers, toes and surrounding tissues.
Fetal Movement at Pregnancy Week 24
By Week 24, many pregnant people can recognize fetal movements clearly.
Movements can include kicks, turns, stretches, rolling and smaller jerking sensations.
There is no fixed daily number of movements that applies to every pregnancy.
The important principle later in pregnancy is becoming familiar with your baby's own usual pattern.
What Does “Viability” Mean at Pregnancy Week 24?
The NHS describes Week 24 as a stage at which a baby may survive if born and given appropriate neonatal support.
However, the word viability needs careful medical context.
ACOG explains that there is no single formal clinical definition that can predict whether an individual fetus will survive outside the uterus.
Week 24 remains within the medically complex periviable period, generally defined as 20 weeks through 25 weeks and 6 days.
ACOG cites population-level survival-to-discharge estimates of around 42% to 59% for births at 24 weeks in the evidence used for its guidance.
If very premature delivery appears possible, counseling from obstetric, maternal-fetal medicine and neonatal specialists is needed for an individualized assessment.
Pregnancy Week 24 Development Timeline
Mayo Clinic estimates a Week 24 fetal weight of around 630 grams.
The musculoskeletal system continues maturing rather than starting development for the first time.
Kicks and turns may be increasingly obvious.
Blood vessels may be visible through the developing skin.
Early subcutaneous fat continues accumulating beneath the skin.
Respiratory structures continue maturing for later life outside the uterus.
These ridges contribute to future fingerprints and footprints.
Maternal Changes During Pregnancy Week 24
The uterus continues expanding above the belly button as the fetus, placenta and surrounding pregnancy tissues grow.
Your abdomen may be increasingly prominent, although bump size differs considerably from one pregnancy to another.
The NHS lists possible symptoms at Week 24 such as tiredness, sleeping problems, stretch marks, round ligament discomfort, headaches, bleeding gums and hemorrhoids.
Back, rib, breast, abdominal and pelvic discomfort can also occur as pregnancy progresses.
Where Is the Uterus at Pregnancy Week 24?
By Week 24 the top of the uterus has generally risen above the belly button.
The original guide describes this as a couple of inches above the navel.
That can be a reasonable visual approximation for some pregnancies, but it is not an exact clinical standard.
From around this stage, healthcare professionals can use fundal height to monitor how uterine growth is progressing.
Fundal Height at Pregnancy Week 24
Fundal height is the distance in centimeters between the pubic bone and the top of the uterus.
According to Mayo Clinic, after Week 24 the fundal height generally approximates the number of weeks of pregnancy, plus or minus about 3 centimeters.
For example, around Week 24 a measurement in the general neighborhood of 24 centimeters can be expected in many pregnancies, but normal variation exists.
Factors such as uterine fibroids, multiple pregnancy, fetal position and maternal body characteristics can influence measurement accuracy.
Gestational Diabetes Screening Begins Around This Stage
Pregnancy Week 24 is also clinically important because routine screening for gestational diabetes commonly begins around this stage.
ACOG states that glucose screening is usually performed between 24 and 28 weeks of pregnancy if earlier testing was not indicated.
A glucose screening test measures how the body handles sugar during pregnancy.
For a common screening approach, a sweet glucose drink is consumed and a blood sample is taken later.
A high screening result does not automatically confirm gestational diabetes; additional testing may be needed.
Maternal Weight Gain at Pregnancy Week 24
Weight gain commonly continues during the second trimester, but there is no single Week 24 number that applies to everyone.
Appropriate gain depends on prepregnancy BMI, whether the pregnancy involves one fetus or multiples and individual health circumstances.
The NHS also emphasizes that bump size varies and that a small-looking or large-looking abdomen by itself does not tell you whether fetal growth is normal.
Weight trends and fetal growth are better interpreted as part of ongoing prenatal care.
Possible Pregnancy Week 24 Symptoms
Growing abdominal size and other pregnancy symptoms can interrupt sleep.
Stretching around the expanding uterus may cause aches along the sides of the abdomen.
Skin stretching can make stretch marks increasingly noticeable.
Headaches can continue during the second trimester.
Pregnancy-related changes can make gums more sensitive and prone to bleeding.
Constipation and pressure can contribute to hemorrhoids during pregnancy.
Healthy Eating During Pregnancy Week 24
Continue focusing on a balanced diet containing vegetables, fruits, protein foods, whole grains and other nutrient-rich options.
The NHS notes that there is generally no need to substantially increase food intake yet simply because you are pregnant.
Individual calorie and nutrient needs differ according to health, activity level, body size and pregnancy circumstances.
Continue prenatal vitamins or other supplements according to your healthcare professional's recommendations.
Hydration During Pregnancy Week 24
Adequate hydration supports circulation, digestion and overall health during pregnancy.
Fluid needs depend on climate, activity level, diet, body size and individual medical circumstances.
Drink regularly throughout the day and increase fluid intake around physical activity when appropriate.
Some medical conditions can require individualized fluid advice, so avoid treating one universal volume as correct for everyone.
Staying Active During Pregnancy Week 24
For most healthy people with uncomplicated pregnancies, regular moderate physical activity remains beneficial.
Activities such as walking and pregnancy-appropriate exercise can support cardiovascular fitness, mobility and general wellbeing.
Exercise recommendations should be adjusted if your maternity team has identified a reason to restrict activity.
Stop exercising and seek appropriate advice for symptoms such as significant bleeding, dizziness, chest pain, painful contractions or fluid leakage.
Prenatal Care Around Pregnancy Week 24
Continue attending scheduled prenatal appointments.
Depending on your healthcare system and individual care plan, appointments around this stage may include:
Routine monitoring can help identify pregnancy-related blood pressure changes.
Uterine growth may increasingly be followed using fundal-height measurement.
Gestational diabetes testing commonly occurs between Weeks 24 and 28.
Movement and your developing awareness of the usual activity pattern can be discussed.
Why Signs of Preterm Labor Matter at Week 24
Week 24 is still extremely early for delivery.
Symptoms that could indicate premature labor or membrane rupture need prompt professional assessment.
Possible warning signs can include regular painful contractions, persistent pelvic pressure, significant new backache, bleeding or fluid leaking from the vagina.
Pregnancy Week 24 and Your Estimated Due Date
Pregnancy Week 24 is based on gestational age, conventionally counted from the first day of the last menstrual period.
Our Pregnancy Due Date Calculator can help estimate an expected delivery date using relevant pregnancy dating information.
A due date remains an estimate rather than a guaranteed date of birth.
Clinical ultrasound dating and other medical information may be used by your healthcare professional when appropriate.
What Happens After Pregnancy Week 24?
Pregnancy Week 25 brings continued growth of the brain, lungs, nervous system and body tissues.
Mayo Clinic notes that around Week 25 the fetus may begin moving in response to familiar sounds such as your voice.
Body fat continues gradually accumulating beneath the skin while fetal movement remains strong.
Every additional week provides important opportunities for continued development, particularly for the lungs and nervous system.
Pregnancy Tools You May Find Useful
Estimate your expected delivery date using relevant pregnancy dating information.
Estimate your current gestational week from an appropriate pregnancy starting date.
Estimate a possible conception date or range while recognizing natural variation.
See approximately how much estimated time remains until your expected due date.
When Professional Healthcare Guidance Is Important
Week-by-week pregnancy information provides general educational context and cannot determine whether an individual pregnancy is developing normally.
Seek prompt professional care for heavy bleeding, significant abdominal pain, regular painful contractions, suspected fluid leakage, fainting, fever, severe breathing difficulty or other worrying symptoms.
If you have not felt any fetal movement by Week 24, tell your midwife or maternity team.
If movements have already become familiar and then become reduced, stop or change significantly, contact your maternity service promptly rather than waiting until the next day.
Pregnancy Week 24 FAQs
What happens during Pregnancy Week 24?
During Pregnancy Week 24, fetal growth continues, the skin remains wrinkled and thin, movement remains strong, the lungs continue developing, body fat forms beneath the skin and fingerprint and footprint ridges continue developing.
How big is the fetus at 24 weeks?
The NHS describes the fetus as around 30 centimeters from head to heel. Mayo Clinic gives a crown-to-rump measurement of about 21 centimeters and a weight of more than 1 1/3 pounds or about 630 grams.
Does the fetus gain six ounces during Week 24?
There is no universal rule that every fetus gains exactly six ounces during Week 24. Fetal growth is continuous and individual growth rates vary.
Are bones and muscles developing at Week 24?
Yes. Bones, muscles and other tissues continue growing and maturing, although bone and muscle development began much earlier in pregnancy rather than starting specifically at Week 24.
What does fetal skin look like at Week 24?
Mayo Clinic describes Week 24 fetal skin as wrinkled and see-through with a pink or red appearance related to visible blood vessels beneath the thin skin.
Is a fetus viable at 24 weeks?
Survival outside the uterus is possible at 24 weeks with intensive neonatal care, but viability is not a guaranteed outcome. ACOG emphasizes that survival depends on gestational age and many other individual clinical factors.
Where is the uterus at Pregnancy Week 24?
The uterus is above the belly button by Week 24, but using a fixed number of inches is less useful than clinical fundal-height measurement.
What should fundal height be at 24 weeks?
After Week 24, fundal height in centimeters generally approximates gestational age in weeks within about plus or minus 3 centimeters, although individual factors can affect accuracy.
Is gestational diabetes screening done at Week 24?
ACOG states that glucose screening for gestational diabetes is usually performed between 24 and 28 weeks when earlier testing is not indicated.
What happens during Pregnancy Week 25?
During Pregnancy Week 25, fetal growth continues, movement may respond to familiar sounds, the lungs and nervous system keep developing and body fat gradually increases.
Medical References and Further Reading
The updated Week 24 information on this page uses current medical and public-health guidance to provide context alongside the original material.
Mayo Clinic:
Fetal Development: The Second Trimester
American College of Obstetricians and Gynecologists:
How Your Fetus Grows During Pregnancy
ACOG:
Changes During Pregnancy
ACOG:
Routine Tests During Pregnancy
ACOG:
Gestational Diabetes
ACOG:
Understanding and Navigating Viability
Mayo Clinic:
Fundal Height
Next: Pregnancy Week 25
During Pregnancy Week 25, fetal growth continues, movement may begin responding to familiar sounds and the lungs, nervous system and body tissues keep developing.
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