Week 39 of Pregnancy
Week 39 means you're nearly there, your baby is officially full term, and labor could begin at any time. Every cramp, twinge, or contraction may have you wondering, “Is this it?” Your body is preparing for birth in small and big ways. While waiting can feel endless, this final stretch is an important time to rest, hydrate, and mentally prepare for labor and postpartum. You’ve come so far, and your baby will be in your arms very soon.
Baby’s Size
Your baby is about the size of a chayote squash.
Baby’s Development at 39 weeks
Full-Term Functionality
Your baby's organs are developed and functioning well enough to support life outside the womb. The lungs are producing surfactant to keep the air sacs open after the first breath.
Building Fat Reserves
Your baby is still adding a bit of fat each day, which helps regulate body temperature after birth and gives those sweet cheeks a fuller look.
Brain Power Boost
Brain development is still rapidly progressing, even now, which is why these last days in the womb remain so important for cognitive growth.
Movement Patterns May Change
Movements might feel slower or more like stretches than kicks, but you should still feel consistent activity throughout the day.
Pregnancy Symptoms during Week 39
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You may begin to feel cramps or pressure as your cervix dilates and effaces. These signs often occur days, or even hours, before labor starts.
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Baby may be sitting low in your pelvis, causing discomfort or sharp sensations in the hips, groin, or lower back.
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You may experience a burst of energy to clean and organize, or you may feel deeply tired and slow-moving. Both are totally normal.
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Hormonal changes can cause your digestive system to act up, another subtle hint that labor could be near.
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Pay attention to timing. If contractions become more intense and closer together, it could be the real thing.
Pregnancy checklist at 39 weeks pregnant
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Keep track of the frequency, duration, and intensity. A contraction timer app can help you decide when to call your provider or head to the hospital.
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Double-check you’ve packed essentials, comfy clothes, snacks, phone charger, and baby gear. Include your birth preferences if you made one.
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Make sure your birth partner or support team knows who to call, when to leave, and what your preferences are for support during labor.
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Review breastfeeding tips or your bottle-feeding plan. Get your supplies ready and know where to reach out for support postpartum.
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Think about who will visit, how you’ll get meals, and what rest and healing time you’ll need in those early days after birth.
39 Weeks Pregnant Belly
Your belly is likely very round, full, and noticeably heavy by now. Many expectant parents describe a feeling of pressure or weight low in the pelvis, especially if baby’s head has engaged, a process often called “lightening.” When baby drops into the pelvis, it can relieve pressure on your diaphragm, making it easier to breathe, but it often comes with a trade-off: increased bladder pressure and more frequent trips to the bathroom.
The skin on your belly may feel extremely tight, itchy, or even sensitive to touch as it stretches to accommodate baby. Applying a nourishing oil or cream regularly can provide some relief, and wearing a supportive belly band can ease the strain on your back, hips, and abdomen. This stage can feel physically intense, but every symptom is a sign that your body is preparing for labor.
Tips & Resources
Use the Preparing for Your New Arrival Guide ” Guide: This free ChildbirthU guide helps ensure you’ve covered newborn essentials and postpartum care for yourself.
Practice Labor Comfort Measures: Return to the Relaxation Techniques for Labour free guide for breathing, movement, and pain relief tools.
Consider a Private Prenatal Session: If you want last-minute questions answered, book a Private 1-on-1 Prenatal Class for personalized support.
Stay Nourished and Hydrated: Your body is working hard, even when resting. Eating balanced meals and staying hydrated help support endurance for labor.
Focus on Rest and Mindset: Listen to calming music, practice affirmations, and spend quiet time visualizing a positive birth. Mental preparation is as important as physical.