Pregnancy Week 23 is another important stage of the second trimester. Your baby continues growing rapidly, while the brain, lungs, muscles, bones and sensory systems continue to mature.
Your pregnancy bump is likely becoming more noticeable, and your baby's movements may be easier to recognize. You may also experience new physical changes as your uterus continues expanding.
Every pregnancy is different, so symptoms and fetal movement can vary from one woman to another.
What Happens During Pregnancy Week 23?
During Week 23, your baby continues developing stronger muscles and bones.
The nervous system is becoming increasingly organized, helping your baby coordinate movements. The baby's senses are also developing, and the lungs continue preparing for breathing after birth.
The placenta continues supplying oxygen and nutrients through the umbilical cord.
How Big Is the Baby at Week 23?
Your baby is approximately the size of a grapefruit, although exact measurements can vary.
Your baby will continue gaining weight and developing body fat during the weeks ahead.
Baby's Movement at Week 23
Fetal movements may become more noticeable during this period.
You may feel:
- Kicks
- Rolling
- Stretching
- Turning
- Gentle tapping
- Repeated movements
Your baby may also have periods of activity followed by periods of rest.
At this stage, movement patterns are still developing, so they may not yet be completely predictable.
Why Is My Baby Moving More?
As your baby's muscles and nervous system mature, movements become stronger and more coordinated.
Your baby may move in response to sounds or changes in your position, although movement patterns can vary throughout the day.
Baby's Brain Development
The brain continues developing rapidly during Week 23.
Neural connections are becoming more complex, helping coordinate movement and sensory functions.
This development continues throughout pregnancy and after birth.
Baby's Hearing
Your baby's hearing system continues maturing.
The baby can hear sounds from inside your body, including your heartbeat and breathing.
As pregnancy progresses, sounds from outside the uterus may also become increasingly noticeable.
Talking or reading to your baby can be an enjoyable bonding activity.
Baby's Lungs
The lungs continue developing during Week 23.
Although they are not yet fully mature, important structures necessary for breathing are forming.
The lungs will continue maturing throughout the rest of pregnancy.
Baby's Skin
Your baby's skin is still thin and delicate.
It may appear somewhat wrinkled because the baby has not yet developed much body fat.
The skin is protected by vernix caseosa, a protective coating that helps protect it from the amniotic fluid.
Fine hair called lanugo may also cover parts of the body.
Pregnancy Symptoms During Week 23
You may experience:
- Heartburn
- Constipation
- Bloating
- Back discomfort
- Leg cramps
- Increased appetite
- Mild headaches
- Breast tenderness
- Increased vaginal discharge
- Mild swelling
- Stretching sensations around the abdomen
Some women feel comfortable during this stage, while others experience more physical discomfort.
Your Growing Belly
Your uterus continues expanding as your baby grows.
Your pregnancy bump may now be clearly visible.
The size and shape of your belly can vary depending on your body type, previous pregnancies, muscle tone and the baby's position.
There is no single "correct" pregnancy bump.
Back and Pelvic Discomfort
As your uterus grows, your center of gravity changes and additional pressure can be placed on your back and pelvis.
To improve comfort:
- Maintain good posture.
- Avoid heavy lifting.
- Wear supportive and comfortable shoes.
- Change positions regularly.
- Use pillows while sleeping.
- Try gentle stretching if appropriate.
Contact your healthcare provider if you experience severe or persistent pain.
Heartburn During Week 23
Heartburn can become increasingly common during pregnancy.
Helpful habits may include:
- Eating smaller meals.
- Eating slowly.
- Avoiding foods that trigger symptoms.
- Staying upright after meals.
- Avoiding large meals before bedtime.
Talk with your healthcare provider before taking medication for heartburn.
Constipation
Hormonal changes can slow digestion during pregnancy.
To support healthy digestion:
- Drink enough water.
- Eat fruits and vegetables.
- Choose whole grains.
- Include other fiber-rich foods.
- Stay active if appropriate.
If constipation becomes severe or persistent, discuss it with your healthcare provider.
Leg Cramps
Leg cramps may occur during pregnancy.
Gentle stretching and regular movement may help.
Adequate hydration is also important.
Sudden swelling, redness or significant pain in one leg should be assessed promptly by a healthcare professional.
Breast Changes
Your breasts continue preparing for breastfeeding.
You may notice:
- Increased fullness
- Tenderness
- Darker areolas
- More visible veins
A supportive maternity bra can help improve comfort.
Nutrition During Pregnancy Week 23
A varied and balanced diet remains important for both you and your developing baby.
Fruits and Vegetables
Include a variety of fruits and vegetables every day.
They provide fiber, vitamins, minerals and other important nutrients.
Protein
Good choices include:
- Eggs
- Chicken
- Lean meat
- Beans
- Lentils
- Tofu
- Yogurt
- Nuts
- Low-mercury fish
Whole Grains
Choose foods such as oats, quinoa, brown rice and whole-wheat bread.
Healthy Fats
Include:
- Avocado
- Olive oil
- Nuts
- Seeds
- Low-mercury fish
Important Nutrients
Iron
Iron supports the increased blood supply required during pregnancy.
Good sources include lean meat, beans, lentils, leafy green vegetables and fortified cereals.
Calcium
Calcium is important for your baby's developing bones and teeth.
Folate
Continue taking folic acid or folate according to your healthcare provider's recommendations.
Iodine
Iodine supports normal thyroid function and fetal development.
Vitamin D
Vitamin D supports bone health and helps the body absorb calcium.
Your healthcare provider can advise you about the prenatal supplement that best suits your needs.
Staying Hydrated
Drink water regularly throughout the day.
Adequate hydration supports digestion and circulation and can help reduce constipation.
Remember to drink regularly during exercise and hot weather.
Foods to Avoid
Continue following pregnancy food-safety recommendations.
Avoid:
- Alcohol
- Raw or undercooked meat
- Raw eggs
- Unpasteurized dairy products
- Raw shellfish
- Fish high in mercury
Wash fruits and vegetables thoroughly before eating.
Caffeine During Pregnancy
A commonly recommended limit is 200 mg of caffeine per day.
Remember that caffeine can be found in coffee, tea, chocolate, energy drinks and some medications.
Consider your total intake from all sources.
Exercise During Week 23
For many women with uncomplicated pregnancies, moderate physical activity can be beneficial.
Suitable activities may include:
- Walking
- Swimming
- Prenatal yoga
- Light strength exercises
- Gentle stretching
Avoid activities with a high risk of falling or abdominal injury.
If your healthcare provider has advised you to restrict exercise, follow their instructions.
Sleep During Week 23
As your belly grows, sleeping comfortably may become more difficult.
You can use pillows to support your abdomen, back or legs.
A relaxing bedtime routine and regular sleep schedule may also help.
If you have persistent sleep problems, discuss them with your healthcare provider.
Prenatal Care
Continue attending your scheduled prenatal appointments.
Your healthcare provider may monitor:
- Blood pressure
- Weight
- Pregnancy symptoms
- Baby's growth
- Blood tests
- Urine tests
- Medications
- Prenatal supplements
Use your appointments to ask about any new symptoms or concerns.
Emotional Well-Being
Pregnancy can be emotionally challenging as well as exciting.
You may be thinking more about childbirth, parenting and preparing for your baby's arrival.
Try to stay connected with supportive people and make time for rest.
If persistent sadness or anxiety affects your daily life, speak with a healthcare professional.
When Should You Seek Medical Help?
Contact your healthcare provider promptly if you experience:
- Heavy vaginal bleeding
- Severe abdominal or pelvic pain
- Severe persistent one-sided pain
- Fainting
- Significant dizziness
- Fever
- Fluid leaking from the vagina
- Severe vomiting
- Unusual vaginal discharge with a strong odor
- Sudden significant swelling
- Severe headache or vision changes
Severe or unusual symptoms should always be evaluated.
Pregnancy Week 23 Checklist
- Continue your recommended prenatal supplement.
- Eat a varied and nutritious diet.
- Drink enough water.
- Include fiber-rich foods.
- Get adequate rest.
- Stay active if appropriate.
- Avoid alcohol and tobacco.
- Keep caffeine within recommended limits.
- Attend your prenatal appointments.
- Discuss any unusual symptoms with your healthcare provider.
- Make time for relaxation.
- Continue preparing emotionally and practically for your baby's arrival.
Frequently Asked Questions
How big is the baby at Week 23?
The baby is approximately the size of a grapefruit, although exact measurements vary.
Can I feel my baby moving at Week 23?
Many women can feel fetal movement by this stage. The frequency and strength of movement can vary considerably.
What does fetal movement feel like?
It can feel like kicking, tapping, rolling, stretching or fluttering inside your abdomen.
Are the baby's lungs developed at Week 23?
The lungs are continuing to develop, but they are not yet fully mature. Important structures needed for breathing are developing during this period.
Is heartburn normal at Week 23?
Yes. Heartburn is common during pregnancy and may become more noticeable as the uterus grows.
What should I eat during Week 23?
Focus on vegetables, fruits, whole grains, protein-rich foods, healthy fats and calcium-rich foods, along with your recommended prenatal supplement.
Conclusion
Pregnancy Week 23 is a period of continued growth and development. Your baby's brain, lungs, muscles, bones and senses continue to mature, while movements may become stronger and easier to recognize.
Your body is also adapting to the growing uterus. Heartburn, constipation, back discomfort, leg cramps and mild swelling can occur during this stage.
Continue eating a balanced diet, drinking enough water, staying active when appropriate and attending regular prenatal appointments.
Every pregnancy is unique. If you experience heavy bleeding, severe pain, significant swelling, severe headache, vision changes, fluid leakage or another concerning symptom, contact your healthcare provider promptly.
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