Week 42
Trimester 3Days 41+0 to 41+6
Baby is now the size of a large watermelon
Welcome to Week 42. If you have reached this point, you are part of a very small group of pregnant parents. Most babies have already arrived by now, either through spontaneous labor or planned induction. You may be tired of answering questions, tired of waiting, tired of contractions that go nowhere, and very ready to meet your baby. The good news is that the end is now extremely close — one way or another, your baby will be arriving very soon.
Length
50–54 cm
19.7 in–21.3 in
Weight
3.5–4.2 kg
7.7 lb–9.3 lb
Development highlights
- check_circleYour baby is fully prepared for life outside the womb — growing slightly, building small additional fat stores, and refining body systems.
- check_circleThe brain remains incredibly active, forming new neural connections that support learning, memory, sensory processing, and emotional development.
- check_circleMany babies born after their due date have longer fingernails, longer hair, less vernix, drier skin, and a more alert appearance — all normal variations.
- check_circleSpace is extremely tight — movements feel strong, slow, stretchy, and pressure-filled, but should still occur regularly.
- check_circleHealthcare providers monitor babies closely at this stage with heart rate monitoring, ultrasounds, amniotic fluid assessment, and movement evaluation.
This week's milestones
- check_circleFully developed and ready for birth.
- check_circleOften remarkably alert after birth.
- check_circleBrain still actively building connections.
- check_circleAll systems prepared.
Fun fact
Many babies born after their due date seem remarkably alert and curious during their first days of life.
Weekly checklist
- Monitor baby movements.
- Attend all recommended appointments.
- Stay hydrated.
- Eat balanced meals.
- Keep labor plans ready.
- Rest whenever possible.
Frequently asked questions
Is Week 42 safe?
Many babies do very well at Week 42, which is why close monitoring is offered. Your healthcare provider will guide you based on your specific situation.
Why hasn't labor started yet?
The exact trigger for labor is still not fully understood. Some healthy babies simply take longer to arrive.
Is it normal to feel frustrated?
Absolutely. Many parents feel emotionally exhausted by this stage — it is completely understandable.
Will my baby definitely arrive soon?
Yes. Whether labor begins naturally or through medical assistance, your baby will be arriving very soon.
Related tools
shopping_bagHelpful picks for Trimester 3
Browse all pregnancy products →Frida Mom Motherload Hospital Bag
30-piece pre-packed hospital bag covering labor, postpartum, and newborn grooming — organized in removable toiletry bags.
Momcozy M5 Wearable Electric Breast Pump
Hands-free wearable electric pump that fits discreetly in your bra — portable and quiet for pumping on the go.
Birth Comb & Acupressure Massage Ball
Labor pain relief set using acupressure — hold the comb during contractions to activate pressure points.
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Medical information disclaimer
The content on this page is provided for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
Always consult your GP, midwife, health visitor, paediatrician, or other qualified healthcare provider before making decisions about your health or your child's health and development. Never ignore or delay seeking professional advice because of something you have read on BabyScout. If you think there is a medical emergency, call 999 (UK) or your local emergency services immediately.