Week 34 of 40 Third Trimester

Week 34: Lungs Are Nearly Mature

Your baby's lungs are nearly mature now, and the central nervous system continues maturing rapidly in these final weeks.

Baby is the size of
Cantaloupe
45.0 cm
2,146 g
85% through your pregnancy
Week 33 All Weeks Week 35
👶

Baby's Development

Your baby's lungs are nearly fully mature at this point, though they'll continue refining right up until birth. The central nervous system continues developing rapidly, supporting increasingly coordinated movements and responses.

Most of the lanugo (the fine, soft body hair from earlier in pregnancy) has now disappeared, though some babies are born with small remaining patches that shed shortly after birth.

🤰

Changes in Your Body

Your uterus continues taking up significant space, and many women feel quite ready to be done with pregnancy by this stage, even while excited for what's ahead.

💊

Common Symptoms

At 34 weeks, common experiences include:

  • Significant discomfort and fatigue
  • Backaches and pelvic pressure
  • Swelling
  • Difficulty sleeping
  • Frequent Braxton Hicks contractions
  • Shortness of breath
🥗

Nutrition This Week

Continue balanced nutrition with adequate protein, calcium, and iron. Staying well hydrated remains important, particularly if you're experiencing more frequent Braxton Hicks contractions, as dehydration can sometimes trigger them.

🧘

Safe Exercises

Gentle movement remains beneficial, but prioritize rest as your body asks for it. This is a stage where listening closely to your body matters more than pushing through a routine.

🏥

Medical Checklist

This week:

  • Confirm all hospital paperwork and pre-registration is complete if required
  • Review newborn care basics if this is your first baby
  • Continue monitoring fetal movement daily
🩺

Doctor Visit Guide

Your doctor may discuss group B strep testing, which is typically performed between 35 and 37 weeks, checking for a common bacteria that's usually harmless but is screened for to allow preventive treatment during labor if needed.

Frequently Asked Questions

Group B streptococcus is a common bacteria that many people carry without symptoms, but it can occasionally be passed to a baby during birth. Routine screening between 35-37 weeks allows your doctor to give antibiotics during labor if you test positive, significantly reducing risk to your baby.

Very much so. Physical discomfort, sleep disruption, and simple anticipation make this a common feeling for many women in the final weeks, even when they're genuinely excited about meeting their baby.

While lung development is far along by 34 weeks, babies born at this point may still need some respiratory support. Every additional week of pregnancy continues to improve lung maturity and overall readiness for life outside the womb.
Get Weekly Pregnancy & Baby Updates