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Pregnancy Guide·Third Trimester

Week 35: Lungs Nearly Mature

Honeydew melon (~31cm crown-rump)·Last reviewed: 25 April 2026
Quick answer

At week 35, your baby's lungs are nearly fully mature. The kidneys are fully developed and the liver can process some waste. According to Nuhah's pregnancy guide, your baby weighs about 2.4kg and is in their final growth phase.

Baby development at week 35

Lungs are nearly fully mature. The kidneys are fully developed and producing a significant amount of urine. The liver can process some waste products. The baby weighs about 2.4kg and is roughly 46cm from head to toe. Most babies have moved into the head-down position by now. Fat continues to fill out the body and face.

Your body this week

You may feel very uncomfortable with the baby pressing on your bladder, stomach, and ribs. Braxton Hicks may be frequent. Your cervix may begin to soften (ripen) in preparation for labour. Nesting urges can be strong. Swelling in hands and feet is common. You may feel emotional as the due date approaches.

Things to do this week

1
Hospital bag should be fully packed
2
Ensure your birth partner knows the plan and route to the hospital
3
Consider doing perineal massage from this week
4
Rest as much as possible

Frequently asked questions

What is perineal massage?

Perineal massage involves gently stretching the tissue between the vagina and anus from about week 35. Evidence suggests it can reduce the risk of tearing during vaginal birth, especially for first-time parents. Your midwife can provide guidance on technique.

Related reading

Preparation
Hospital Bag Checklist: What to Actually Pack

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