40 Weeks pregnant: Full-term baby, symptoms, and delivery prep

An illustration of a uterus and a fetus the size of a watermelon representing 40 weeks pregnant.

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Created with Hector Chapa, MD, FACOG, Clinical Assistant Professor of Obstetrics and Gynecology, USA

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In a nutshell
  • At 40 weeks pregnant, your baby is fully developed, and your body is ready for labor.  At this stage, they weigh approximately 3.4 kilograms (7.5 pounds) and measure about 20-21 inches long. 
  • Watch for labor signs, manage discomfort, and prepare for postpartum care.
  • Here are signs that labor may be near: regular, intense contractions, water breaking, losing y, and lower back pain.

Congratulations—you’ve made it to 40 weeks pregnant and this is your due date! Your baby is now fully developed and ready to meet you. Whether you’re experiencing labor signs or still waiting, this week is about final preparations and managing the anticipation. Let’s dive into week 40 of pregnancy, including what symptoms to watch for, baby development, and how to get ready for postpartum life.

Prepare for labor with confidence

Let Femia guide you through with personalized tips and expert advice

tailored to your pregnancy journey

40 Weeks pregnant symptoms

Here are common symptoms you may experience at 40 weeks:

  • Pelvic pressure: As your baby drops lower, you may feel intense pressure in your pelvis.
  • Braxton Hicks contractions: Practice contractions may become more frequent and intense.
  • Back pain: Lower back pain is common as your baby positions for birth.
  • Increased discharge: Milky or clear discharge is normal as your cervix prepares for labor.
  • Fatigue: Carrying your baby to full term can leave you feeling drained.

👉Find out more: 39 Weeks pregnant: Discharge, spotting & birth readiness

40 Weeks pregnant symptoms not to ignore

  • Regular, painful contractions: Consistent contractions that grow stronger may signal active labor.
  • Heavy bleeding: Bright red bleeding could indicate a complication.
  • Decreased baby movements: A sudden drop in activity requires immediate medical attention.
  • Severe headaches or vision changes: These could be signs of a complication called preeclampsia.

Your body at 40 weeks pregnant

Your body has carried your baby to full term, and you might feel heavier than ever. You may notice increased pelvic pressure and experience difficulty finding comfortable positions for sitting or sleeping.

40 Weeks in months

You’re officially 9 months pregnant, though some women may deliver up to two weeks past their due date.

40 Weeks pregnant belly

Your belly will likely feel tight, and your skin may itch due to stretching. Twin pregnancies at 40 weeks often result in a larger and more prominent bump. Use a gentle moisturizer to reduce discomfort.

Baby development at 40 weeks of pregnancy

At 40 weeks, your baby is fully developed and ready for life outside the womb. Their organs are mature, and they’re gaining fat to maintain body temperature after birth.

  • Weight: Around 3.4 kilograms (7.5 pounds).
  • Length: The size of your baby is about 20-21 inches, similar to the size of a watermelon.
  • Movements: Your baby’s movements may feel slower but strong as space is limited.

Labor signs at 40 weeks

Here are signs that labor may be near:

  • Regular, intense contractions: These occur at consistent intervals and grow closer together.
  • Water breaking: A gush or steady leak of amniotic fluid indicates labor is starting.
  • Losing your mucus plug: This jelly-like discharge may be tinged with blood.
  • Lower back pain: Persistent, intense back pain could signal labor.

👉Find out more: Best sex positions to induce labor: What works and what doesn’t

How to keep baby inside until 40 weeks

If you’re looking to reach full term, focus on staying healthy and avoiding stress.

  • Stay hydrated: Dehydration can trigger preterm contractions.
  • Rest often: Avoid strenuous activities and prioritize sleep.
  • Monitor symptoms: Report any unusual changes to your healthcare provider promptly.

Health tips and self-care at 40 weeks pregnant

  • Pack your hospital bag: Include essentials like clothes, toiletries, and baby supplies.
  • Track contractions: Use a timer to distinguish between Braxton Hicks and active labor.
  • Stay active: Gentle walks can help encourage labor to start naturally.
  • Prepare for postpartum: Stock up on postpartum essentials like nursing bras and perineal pads.
Prepare for labor with confidence

Let Femia guide you through with personalized tips and expert advice

tailored to your pregnancy journey

Questions from the Femia community

  • How to prepare myself for breastfeeding?

    Start by learning about proper latching techniques and breastfeeding positions. Investing in nursing bras and nipple creams can help ease the process. Talk to a lactation consultant or attend a prenatal breastfeeding class to feel more confident.

  • How long will I stay in the hospital after delivery?

    Most vaginal deliveries require a 1-2 day stay, while C-sections typically require 2-3 days. Your stay may vary depending on your recovery and your baby’s health.

  • Is it normal to have no signs of labor at 40 weeks?

    Yes, many women don’t show signs of labor until after 40 weeks. Your provider may discuss options like induction if you go significantly past your due date. Some may elect to have induction of labor starting at 39 weeks.

  • What should I do if my baby stops moving?

    Reduced or absent movements require immediate medical attention. If you notice significant changes, contact your provider right away for an evaluation.

The bottom line

Reaching 40 weeks of pregnancy means your baby is fully ready to meet the world. While many women go into labor naturally at this stage, it’s not uncommon to pass your due date without signs of labor. Your provider will guide you through next steps if necessary, such as monitoring or induction.

As you approach delivery, focus on recognizing labor signs like consistent contractions, water breaking, or losing your mucus plug. Continue preparing for postpartum life by ensuring you have all essentials for yourself and your baby, and consider breastfeeding or formula feeding options. Managing any late-pregnancy discomfort and staying in regular contact with your healthcare team will help you navigate this final stage with confidence. Soon, you’ll be holding your baby in your arms.

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