27 Weeks Pregnant: The Final Week of the Second Trimester

At 27 weeks pregnant, your baby is about the size of an eggplant and continuing steady growth as the second trimester comes to a close. If you are searching for 27 weeks pregnant baby size, symptoms, or development, this week marks an important transition as pregnancy prepares to enter the third trimester.

Your baby is gaining strength, coordination, and increasing awareness of the surrounding environment.

At a Glance:
27 Weeks Pregnant
  • Baby size: About the size of an eggplant
  • Trimester: Second trimester (final week)
  • Key hormonal shift: Relaxin continues loosening joints and ligaments as the body prepares for the months ahead.
  • Common symptoms: Stronger kicks, back discomfort, swelling, heartburn, leg cramps, sleep challenges
  • Doctor visit: Gestational diabetes screening may still occur if not already completed
  • Emotional theme: A growing sense of anticipation as pregnancy prepares to enter the third trimester.

At 27 weeks pregnant, your baby measures about 36 to 37 cm from head to heel and weighs around 900 grams.

Here is what is happening:

  • The lungs continue developing and producing increasing amounts of surfactant
  • Surfactant helps prepare the lungs for breathing after birth
  • Brain development continues rapidly as neural connections expand
  • The eyelids can now open and close
  • Hearing continues improving and babies may respond to voices or music
  • Movements are stronger and more coordinated
  • Sleep and wake cycles are beginning to develop

Your baby is building the strength and coordination needed for continued growth in the third trimester.

What Is Happening in Your Body at 27 Weeks Pregnant

As the uterus continues expanding upward, your body keeps adapting to support your baby’s growth.

You may notice:

  • stronger kicks and movement
  • back discomfort
  • swelling in the feet or ankles
  • leg cramps
  • heartburn
  • sleep discomfort

Blood circulation remains elevated to support the placenta and developing baby.

Emotional and Nervous System Changes

As pregnancy approaches the third trimester, awareness of the months ahead may grow stronger.

You may experience:

  • excitement about meeting your baby
  • increased focus on preparing for birth
  • moments of fatigue or emotional fluctuation

Taking moments for rest and gentle grounding can help maintain balance as pregnancy progresses.

3 Focus Areas This Week

Prepare for the Third Trimester

The final stage of pregnancy is approaching, bringing continued growth and preparation for birth.

Support Sleep and Comfort

Pillows for side sleeping may help improve comfort as your belly grows.

Maintain Balanced Nutrition

Iron, protein, and hydration remain essential as growth accelerates.

Weekly Calm Practice

Place both hands gently on your belly and pause for a moment.

Take a slow inhale through your nose and feel your chest expand.

As you exhale, allow your shoulders and jaw to soften.

Take another steady breath and notice the quiet rhythm within you.

Silently say to yourself: “My body knows how to support this growing life.”

Stay here for a few breaths, allowing this calm moment to support both you and your baby.

Looking Ahead to 28 Weeks Pregnant

At 28 weeks pregnant, the third trimester begins. Growth continues accelerating as your baby prepares for the final months before birth.

Staying Steady as Pregnancy Progresses

As pregnancy moves toward the third trimester, your body continues adapting to support the remarkable process of growth and development.

Moments of pause and steady breathing can help maintain balance as these changes unfold.

MamaZen offers guided sessions designed to support calm focus, steady energy, and restorative rest throughout pregnancy.

Frequently Asked Questions

27 Weeks Pregnant: The Final Week of the Second Trimester

What are common symptoms at 27 weeks pregnant?
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Common symptoms include stronger fetal movement, back discomfort, swelling, heartburn, leg cramps, and sleep challenges.

How big is the baby at 27 weeks pregnant?
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At 27 weeks pregnant, your baby measures about 36 to 37 cm from head to heel and weighs around 900 grams.

Is 27 weeks the third trimester?
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Not yet. Week 27 is the final week of the second trimester. The third trimester typically begins at week 28.

Can babies hear voices at 27 weeks pregnant?
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Yes. Hearing continues developing and babies may respond to familiar voices and sounds.

At 27 weeks pregnant, the second trimester comes to an end as your baby continues gaining strength and coordination.

Each week now moves closer to the final stage of pregnancy, where growth and preparation for birth accelerate.

Move forward with calm awareness as you prepare to enter the third trimester.

Written by Irin Rubin

Founder of MamaZen

Disclaimer

This content is for informational purposes only and does not replace medical advice. Always consult your healthcare provider with questions about your pregnancy.