Week 37 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 winter melon or small pumpkin
19.5 inches · 6.5 lbs
Baby this week
- •Lungs are nearly mature and ready for breathing air
- •Brain continues rapid development, particularly areas for memory and learning
- •Lanugo (fine body hair) has mostly shed; vernix caseosa (protective coating) is still present
- •Baby is typically in head-down position and engaged lower in the pelvis
- •Immune system has received antibodies from you to help fight infection after birth
You this week
- •Increased Braxton-Hicks contractions as your body rehearses for labor
- •Pelvic pressure and heaviness as baby settles lower
- •Frequent urination and occasional leaking when coughing, sneezing, or laughing
- •Swelling in feet and ankles that may worsen by evening
- •Difficulty sleeping and restless legs as you seek comfortable positions
- •Increased vaginal discharge (normal unless foul-smelling or accompanied by itching)
- •Fatigue mixed with bursts of nesting energy
This week's tips
- •Time your contractions if they become regular—this helps you recognize the difference between Braxton-Hicks and true labor
- •Practice your labor positions and comfort measures (walking, birthing ball, warm shower) so they feel natural when you need them
- •Pack or have your hospital bag ready and accessible
- •Schedule a final prenatal appointment to confirm baby's position and discuss your birth plan
- •Stay hydrated and eat frequent small meals—your digestion may feel cramped as baby takes up more space
- •Get rest when you can, even if full sleep feels impossible; rest itself is restorative
- •Connect with your support person about your preferences and what you'll need during labor
Informational only — always check with your doctor or midwife for advice specific to you and your baby.
Looking ahead
In the next few weeks, you'll reach full term (week 39), and your body will continue preparing for labor. Every day brings you closer to meeting your baby—these final weeks are about staying comfortable, trusting your body, and being ready when baby decides it's time.
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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.
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