Reaching week 40 is a monumental milestone — the culmination of your pregnancy journey! Whether this is your first pregnancy or your fifth, this week can be a mix of excitement, anxiety, and anticipation. Your body is preparing for labor, and your baby is ready to meet the world. Here’s everything you need to know about what to expect during the final week.

Physical Changes in Week 40

As you enter your due week, your body may feel heavier, more fatigued, and increasingly uncomfortable. Common physical changes include:

  • Braxton Hicks contractions: These “practice contractions” may become more frequent and intense.
  • Pelvic pressure: As your baby drops lower (known as lightening), you may feel more pressure in your pelvis and bladder.
  • Swelling: Mild swelling in your hands, feet, and ankles is common, so be sure to elevate your legs and stay hydrated.
  • Digestive changes: Some parents experience diarrhea, nausea, or a loss of appetite, as the body prepares for labor.
  • Cervical changes: During your final prenatal check, your healthcare provider may note dilation, effacement (thinning), or station of the baby’s head.
40 weeks pregnant

Baby’s Development in Week 40

You are at your final week! At 40 weeks, your baby is considered full-term and ready for life outside the womb:

  • Size and weight: Most babies weigh between 6 and 9 pounds (2.7–4.1 kg) and measure about 19–21 inches (48–53 cm) long.
  • Organ readiness: Lungs, brain, and other vital organs are fully developed, though brain maturation continues after birth.
  • Vernix and lanugo: The creamy coating (vernix) and fine hair (lanugo) that once protected your baby’s skin are mostly gone, though some may remain.
  • Positioning: Most babies settle into a head-down position, ready for birth. Some may still be breech, requiring special monitoring. Do not worry if your baby is breech, your doctor knows what to do!

Emotional Experiences in Week 40

For some, the idea of your pregnancy being over is a relief. However, for some, it will be the end of an important time in their life. The final week of pregnancy brings strong emotions. It’s common to feel:

  • Excitement and anticipation: The thought of meeting your baby can be overwhelming.
  • Anxiety: Concerns about labor, delivery, and postpartum adjustments are normal.
  • Impatience: Many parents wish the pregnancy would progress faster, especially if overdue.
  • Mood swings: Hormonal changes can amplify emotions, so be kind to yourself.

Signs of Labor to Watch For

Labor can begin anytime during week 40. Knowing the early signs can help you prepare:

  • Regular contractions: Contractions that increase in intensity, duration, and frequency are a key sign of labor.
  • Water breaking: A gush or trickle of fluid may indicate your membranes have ruptured.
  • Bloody show: A small amount of blood-tinged mucus is normal and signals cervical changes.
  • Pelvic pressure or lower back pain: These may accompany contractions as your body prepares to push.

If you notice any unusual symptoms, heavy bleeding, or decreased fetal movement, contact your healthcare provider immediately.

Prenatal Appointments and Monitoring

Even at full term, prenatal care continues to be important:

  • Weekly checkups: Healthcare providers typically monitor blood pressure, weight, and fetal position during weekly visits.
  • Non-stress tests (NST): These monitor your baby’s heart rate and movements if you go past your due date.
  • Ultrasound: Sometimes performed to check amniotic fluid levels or placental health near or after your due date.

Tips for Comfort and Preparation

In the final week, comfort and readiness are key:

  • Rest whenever possible: Short naps and early bedtimes help conserve energy for labor.
  • Stay hydrated and nourished: Balanced meals support your energy levels.
  • Gentle movement: Walking or prenatal yoga can help ease discomfort and may encourage labor onset.
  • Pack your hospital bag: Include essentials for you and your baby, including documents, clothing, and toiletries.
  • Discuss your birth plan: Ensure your partner or support person knows your preferences for labor and delivery.
  • Practice relaxation techniques: Deep breathing, visualization, and meditation can help manage labor anxiety.

When to Call Your Healthcare Provider

It’s important to contact your provider if you experience:

  • Strong, regular contractions or a sudden increase in contraction intensity
  • Water breaking, especially if it’s green or brown
  • Decreased fetal movements
  • Heavy vaginal bleeding or severe abdominal pain
  • Signs of preeclampsia (sudden swelling, severe headache, vision changes)

Your Pregnancy Week-by-Week

Final Thoughts

Week 40 is a time of anticipation and reflection. Your body has nurtured your baby for nine months, and soon, you will meet the person you’ve been waiting for. Every pregnancy is unique, so trust your instincts, lean on your support network, and communicate openly with your healthcare provider. The journey may be long, but the reward is immeasurable.

References

  1. American College of Obstetricians and Gynecologists. (2023). Full-term pregnancy and labor. https://www.acog.org/womens-health
  2. Mayo Clinic. (2024). Pregnancy week by week: Week 40. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week
  3. Cleveland Clinic. (2023). Labor and delivery: Signs of labor. https://my.clevelandclinic.org/health/diseases
  4. March of Dimes. (2024). Full-term pregnancy: What to expect. https://www.marchofdimes.org/pregnancy