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Trimester 3

41 Weeks Pregnant

In week 41, your baby is putting on weight quickly and fine-tuning their lung and brain function. They are becoming more responsive to light and sound from the outside world as they prepare for the big transition to life outside.

8 min read Medically Reviewed Updated 2024-05-01
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Your baby is the size of a Pumpkin
52 cm
Length
3.6 kg
Weight
Week 1Week 13 - End of Trimester 1Week 27Week 42

Baby's Development This Week

In week 41, your baby is putting on weight quickly and fine-tuning their lung and brain function. They are becoming more responsive to light and sound from the outside world as they prepare for the big transition to life outside.

  • The baby continues to grow — gaining about 1/2 pound this week.
  • Fingernails may extend past the fingertips.
  • The skull remains flexible for birth.
  • The baby is running out of room and movements feel more like rolls than kicks.
  • All systems are fully mature and operational.
  • About 51.5cm — the size of a small watermelon.

Your Symptoms at Week 41

As you progress through week 41, you may feel more physical strain as your baby grows. Back pain and difficulty finding a comfortable sleeping position are common. Keep your feet up when you can and take pride in how far you've come in this incredible process.

Extreme impatience
Stay occupied with light activities; trust your body. (severe)
Intense pelvic pressure
Rest and use a birthing ball. (severe)
Braxton Hicks (very frequent)
Monitor carefully — any could transition to real labor. (moderate)
Difficulty walking
Take it slow; the baby is very low in your pelvis. (moderate)
Irritability and emotional swings
Completely normal at this stage; talk to your support system. (moderate)

When to Call Your Doctor

  • Any signs of labor (contractions, water breaking, bloody show)
  • Decreased fetal movement
  • Severe headache or vision changes
  • Your provider's guidance on when to come in for induction

Week 41 Checklist

  • Attend all monitoring appointments (NST, fluid check) (essential)
  • Discuss induction scheduling with your provider (essential)
  • Stay active — walking may help encourage labor (recommended)
  • Keep your hospital bag and car seat ready (essential)

Frequently Asked Questions

Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for personalized guidance about your pregnancy.