40 Weeks Pregnant - Babysense

40 Weeks Pregnant

40 weeks pregnant and still waiting? Discover your baby's size, what's happening to your body, and sensible tips to stay comfortable until labor starts.

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40 Weeks Pregnant

Quick Definition: At 40 weeks pregnant, your baby is considered full term. They're roughly the size of a small pumpkin, and you could go into labor at any moment. Close monitoring from your healthcare provider and steady self‑care help you stay calm and prepared.

Happy due date! You and your baby have reached full term after 40 weeks of remarkable growth and development. Some parents reading this are already cradling their new arrival, while others are still eagerly waiting for labor to begin. Most doctors track both mom and baby closely now and usually schedule an induction within ten days past the due date. Hang in there—you’ll meet your newest family member very soon.

Your Baby at 40 Weeks

Your baby now weighs between 3 kg and 4.5 kg (6.6–10 lb) and measures 48–55 cm (19–22 in). Fingernails and tufts of hair keep growing, and each day in utero strengthens the lungs for that first cry. From a developmental perspective, your little one is just gathering the energy for the big debut.

Ultrasound image of a 40 week fetus
Typical ultrasound view at 40 weeks — baby is fully developed and ready for life outside the womb.

Most care providers describe babies born between 39 and 41 weeks as full term. According to the American College of Obstetricians and Gynecologists (ACOG), deliveries in this window carry the lowest risk of health complications for both baby and mom.

Your Body

By now you may feel more than ready to meet your bundle of joy. Braxton Hicks contractions can intensify as your cervix prepares to dilate, and extra pelvic pressure is common. Try perineal massage, warm baths, and gentle walks to stay comfortable and boost circulation.

Your healthcare team will likely schedule regular non‑stress tests or biophysical profiles if pregnancy extends past your due date. Most doctors induce labor within ten days after 40 weeks to reduce risks linked with post‑term pregnancies.

Sensible Tips

  • Stay close to home but avoid cabin fever—enjoy a relaxed lunch with friends or a video chat with family to lift your spirits.
  • Ask your partner to keep their phone on and fully charged so they can answer promptly.
  • Pack last‑minute extras in your hospital bag.
  • Practice focused breathing with help from our Babysense Breathing Monitor demo video.
  • Track baby kicks daily. Call your provider if you feel any decrease in movement.

Frequently Asked Questions

Is it normal to go past my due date?

Yes. Fewer than five percent of babies arrive on their exact due date, and the range of normal stretches from 37 to 42 weeks.

How can I encourage labor naturally?

Evidence for natural induction methods—such as spicy food or pineapple—is limited. Speak with your provider before trying anything beyond gentle exercise or nipple stimulation.

When should I call the hospital?

Call immediately if your water breaks, you notice regular painful contractions five minutes apart, or you feel reduced fetal movement.

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