Second Trimester

Week 27

Reviewed by Dr. Humaira Latif, OB-GYN & Ultrasound Specialist

Welcome to week 27 of your pregnancy. Here’s a gentle look at what to expect at 27 weeks pregnant — baby’s size, changes in your body, common 27 weeks pregnant symptoms and a caring tip from Dr. Humaira.

Baby's size

The size of a head of cauliflower — about 36.6cm. Marks the end of the second trimester for many.

What's happening

Baby's brain is developing rapidly, and baby can now open and close eyes, and may even hiccup (which you might feel as small rhythmic movements). Lungs, though not fully mature, are capable of breathing with medical support if baby were born now.

Your body

You're approaching the third trimester — fatigue may start returning as your body works harder to support the pregnancy.

Common symptoms

  • Strong movement, including hiccups
  • Backache
  • Shortness of breath with exertion
  • Trouble sleeping
When to call your doctor
  • Reduced fetal movement
  • Regular contractions before 37 weeks
  • Severe swelling or headache
Dr. Humaira's tip

Rhythmic little jerky movements are usually baby hiccups, not a cause for concern — they're actually a good sign of an active, developing nervous system.

Educational only — not a substitute for in-person medical advice. Always follow your own doctor's guidance.