Week 27
Trimester 2Days 26+0 to 26+6
Baby is now the size of a cauliflower
Welcome to Week 27. Congratulations — you have reached the final week of the second trimester. Over the past six months, your baby has grown from a microscopic fertilized egg into a tiny person with a beating heart, active movements, developing senses, and a unique personality that is already beginning to emerge. The third trimester is just around the corner, and meeting your baby suddenly feels much closer.
Length
36–37 cm
14.2 in–14.6 in
Weight
900 g–1 kg
1984.2 lb
Development highlights
- check_circleThe brain is becoming more complex every day, with millions of neural connections forming for learning, memory, movement, emotions, and sensory processing.
- check_circleSleep and wake cycles are becoming more established — your baby may have their own daily rhythm that doesn't always match yours.
- check_circleYour baby's eyes can now open and close, and they can detect light, darkness, and bright changes in the environment.
- check_circleSurfactant production in the lungs continues increasing steadily.
- check_circleTaste buds are active and your baby continues swallowing amniotic fluid — flavors from your diet can influence the taste they experience.
This week's milestones
- check_circleEyes opening and closing.
- check_circleEstablished sleep and wake cycles.
- check_circleResponding to flavors in amniotic fluid.
- check_circleBrain complexity advancing rapidly.
Fun fact
Your baby may already recognize familiar voices and may respond differently to sounds they hear regularly.
Weekly checklist
- Continue prenatal vitamins.
- Stay hydrated.
- Eat balanced meals.
- Stay active.
- Prioritize sleep.
- Begin thinking about birth preparation and postpartum planning.
Frequently asked questions
Is Week 27 the third trimester?
Week 27 is generally considered the final week of the second trimester. The third trimester begins next week.
Why am I tired again?
Your baby's growth, increased weight, and sleep disruptions all contribute to fatigue in the second half of pregnancy.
Should baby movements be strong now?
Yes. Many mothers experience powerful kicks, rolls, and stretches at this stage.
Is it normal to think about labor constantly?
Absolutely. As birth becomes more real, many parents naturally focus more on labor, delivery, and newborn life.
Related tools
shopping_bagHelpful picks for Trimester 2
Browse all pregnancy products →Momcozy Maternity Pregnancy Pillow
Full-length maternity pillow for bump support and back relief — great from the second trimester onward.
Kindred Bravely Maternity Compression Socks
Graduated compression socks to reduce swelling and relieve tired legs — great from the 2nd trimester onward.
Palmer's Cocoa Butter Stretch Mark Lotion
A trusted daily moisturizer for stretch mark prevention during pregnancy with vitamin E and collagen.
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Medical information disclaimer
The content on this page is provided for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
Always consult your GP, midwife, health visitor, paediatrician, or other qualified healthcare provider before making decisions about your health or your child's health and development. Never ignore or delay seeking professional advice because of something you have read on BabyScout. If you think there is a medical emergency, call 999 (UK) or your local emergency services immediately.