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Pregnancy Guide·Third Trimester

Week 37: Early Term

Swiss chard (~34cm crown-rump)·Last reviewed: 25 April 2026
Quick answer

At week 37, your baby is considered early term. The firm grasp reflex is ready and surfactant production is in full swing. According to Nuhah's pregnancy guide, your baby could arrive any time from now, though most first babies come after their due date.

Baby development at week 37

Considered early term. The baby is practising breathing, sucking, and gripping - essential skills for life outside the womb. Surfactant production is in full swing, coating the air sacs in the lungs so they can inflate at birth. The brain and lungs continue maturing. The baby weighs about 2.8kg and is roughly 48cm. Fat continues to fill out the face and body.

Your body this week

You may experience the nesting instinct strongly - an urge to clean, organise, and prepare your home. Braxton Hicks can be frequent and sometimes intense. You may notice increased pelvic pressure and lightning crotch (sharp, shooting pains in the pelvis). Sleep is often disrupted by discomfort, frequent urination, and anxiety about the upcoming birth.

Things to do this week

1
Rest as much as you can - your body needs energy for labour
2
Keep your phone charged and your hospital bag accessible
3
Know the signs of labour - regular contractions, waters breaking, or a show
4
Try to enjoy these final weeks - this is a special time

Frequently asked questions

What does early term mean?

Early term refers to babies born at 37-38 weeks. While the baby's organs are functional, the brain and lungs benefit from every additional day in the womb. Full term is 39-40 weeks. Most healthcare providers recommend waiting until at least 39 weeks unless there is a medical reason for earlier delivery.

Is it normal to feel anxious about labour?

Completely normal. Most expecting parents feel some anxiety about birth, whether it is their first or fifth. Antenatal classes, breathing exercises, and talking to your midwife or birth partner can help. If anxiety is affecting your daily life, speak to your midwife about perinatal mental health support.

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