Week 40 of Pregnancy
Third trimester
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
Baby is
about the size of a small watermelon or pumpkin
19-20 inches · 7-8 lbs
Baby this week
- •Fully developed and ready for birth at any moment
- •Lungs mature and ready to breathe air
- •Baby has settled into birth position (most likely head-down)
- •Vernix (protective coating) may still be present on skin
- •All major organs functioning and ready for life outside the womb
You this week
- •Intense anticipation and possible anxiety about labor
- •Pelvic pressure and cramping as baby settles lower
- •Occasional Braxton Hicks contractions mixed with real labor signs
- •Difficulty sleeping due to discomfort and emotional readiness
- •Possible bloody show or increased mucus discharge
- •Fatigue mixed with bursts of nesting energy
This week's tips
- •Know the difference between Braxton Hicks and real labor—true contractions come at regular intervals and intensify
- •Keep your hospital bag within reach and have a clear plan for getting to your birthplace
- •Rest when you can, even if sleep feels impossible—your body needs energy for labor
- •Stay in close communication with your care provider about any concerning symptoms
- •Consider a walk, warm bath, or position changes to ease discomfort while you wait
- •Lean on your support person; this waiting period can be emotionally intense
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
You're at the threshold of meeting your baby. While most pregnancies continue safely past 40 weeks, discuss with your care provider about induction timelines and what signs warrant immediate attention. Your birth is near.
Track your pregnancy on BringBaby
Join free to track your pregnancy week-by-week and find baby-friendly places to visit as baby grows.
For informational purposes only. This page is not medical advice. Every pregnancy is different — always consult your doctor, midwife, or healthcare provider for guidance specific to your situation. In an emergency, call your provider or 911 immediately.
This content is for informational purposes only and is not medical advice. Every pregnancy and baby is different. Always consult your doctor, midwife, or pediatrician for guidance specific to your situation.
More free tools
Looking for places to bring baby?
Explore BringBaby