Week 24 of Pregnancy
You’ve officially hit the six-month mark! At 24 weeks, your baby is growing rapidly and becoming more active, with noticeable movements and developing sleep patterns. Their lungs are starting to mature, and they can now respond to sounds from outside the womb. As your belly grows, you may experience backaches, swelling, or Braxton Hicks contractions. This is also the week when many care providers schedule glucose screening tests, so it's a good time to check in on your prenatal care and start planning ahead for delivery and postpartum.
Baby’s Size
Your baby is about the size of a corn cob.
Baby’s Development at 24 weeks
Lung Maturation Begins
Your baby’s lungs are starting to develop tiny branches of the respiratory tree and cells that produce surfactant, a substance that helps the lungs inflate after birth.
Facial Features More Defined
Eyelashes, eyebrows, and hair are continuing to grow, and facial features look more like a newborn.
Hearing and Response to Sound
Your baby’s inner ear is developed enough to recognize voices and sounds, and may even startle at loud noises.
Developing Sleep Patterns
Regular cycles of sleep and wakefulness are forming, and your baby might even be settling into a rhythm that matches yours.
Pregnancy Symptoms during Week 24
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As your belly expands and your center of gravity shifts forward, your lower back muscles work harder to support your posture—often leading to discomfort or pain. This is a common symptom in the second half of pregnancy. Wearing supportive shoes, avoiding long periods of standing, practicing gentle prenatal stretches, and using pregnancy pillows for extra support during rest can all help ease the strain. Warm compresses and massage may also provide relief.
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Around this time, many expectant parents notice swelling in the feet and ankles—especially after being on their feet all day or sitting for extended periods. This swelling, known as edema, happens because your body retains more fluid and your growing uterus puts pressure on veins, affecting circulation. Elevating your feet when possible, wearing compression socks, staying well-hydrated, and taking short walks throughout the day can help reduce swelling and improve comfort.
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You may begin to feel mild, irregular tightening in your belly. These are Braxton Hicks contractions—your uterus’s way of “practicing” for labor. They usually come and go, are not painful, and don’t lead to cervical changes. They can be triggered by dehydration, activity, or a full bladder. Rest, hydration, and a change in position often help ease them. If contractions become regular or painful, it’s best to check in with your healthcare provider.
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Pregnancy hormones can cause noticeable changes to your skin’s pigmentation. A dark line—called the linea nigra—may appear running from your pubic area up toward your belly button (or beyond). You might also see darkening of your areolas and increased pigmentation on your face, known as melasma or the “mask of pregnancy.” These changes are completely normal and usually fade after birth. Wearing sunscreen daily can help prevent further darkening.
Pregnancy checklist at 24 weeks pregnant
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Around this time, your provider will likely recommend a glucose screening test to check for gestational diabetes—a common condition that can develop in the second trimester. The test usually involves drinking a sugary beverage and having your blood sugar levels checked after an hour. It’s typically done between weeks 24 and 28, so now is a great time to book your appointment. Catching and managing gestational diabetes early can help ensure a healthy pregnancy and birth.
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While it’s still a few months before baby arrives, it’s helpful to begin outlining your birth preferences now. Consider pain relief options, who you want as your support person, whether you’d like delayed cord clamping or immediate skin-to-skin, and any specific comfort measures you’re hoping to use. ChildbirthU’s Birth Plan Handout is a great starting point to guide these decisions and open up meaningful conversations with your provider and support team.
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As your belly grows and your center of gravity shifts forward, it’s common to slump or sway the lower back—both of which can increase discomfort. Pay attention to your posture throughout the day, especially when standing or sitting for long periods. Try keeping your shoulders relaxed, your back supported, and your feet flat on the floor. Supportive footwear and a chair with lumbar support can also make a big difference.
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If you haven’t done so already, now is a good time to review your workplace maternity leave policies. Look into how much leave you’re eligible for, whether it’s paid or unpaid, and what paperwork needs to be submitted. Having a plan in place early can reduce stress later and give your employer time to prepare for your absence. If you're unsure about your entitlements, consider reaching out to HR or a benefits specialist for clarity.
24 Weeks Pregnant Belly
By this week, your uterus is about the size of a soccer ball and typically rises about 2 inches above your belly button. Your belly is becoming rounder, firmer, and more noticeable, this is often the point when strangers feel confident enough to ask if you’re expecting. You may find that your clothing fits differently, and maternity wear becomes more essential for comfort and support.
As your skin stretches to accommodate your growing baby, you might start to notice itchiness or the appearance of stretch marks on your belly, breasts, hips, or thighs. These marks are completely normal and are influenced by skin type, genetics, and how quickly your body changes. Applying a gentle moisturizer daily can help soothe the skin and support elasticity, although no cream can fully prevent stretch marks.
Embrace this transformation, each change reflects the amazing work your body is doing to support new life.
Tips & Resources
Free Guide: Relaxation Techniques for Labour – Begin practicing calming techniques like breathing exercises and visualization, available in ChildbirthU’s free guide.
Free Infant CPR Class – Consider registering now to feel more confident in responding to emergencies once baby arrives.
Hydration Reminder – Staying hydrated can help reduce swelling and prevent headaches or dizziness.
Stretching & Light Exercise – Prenatal yoga or gentle walking can ease aches and boost mood.