Baby Development at 27 Weeks Pregnant
Fruit / Vegetable Analogy
Crown to Heel (Total Length)
Fetal Weight Standard
Week 27 is the final week of the second trimester! The fetal brain is developing intricate surface wrinkles (gyri and sulci) to dramatically increase cortical surface area for billions of neurons.
The baby's sleep and wake cycles are regular and predictable. The lungs are continuing to produce essential surfactant, and the baby's taste preferences are expanding as they swallow amniotic fluid daily.
Personalized Due Date Recalculator
Input your last menstrual period (LMP) to verify your exact week, remaining days, and estimated delivery date.
Disclaimer: Computational estimates are based on standard clinical algorithms (e.g., Naegele's rule) for educational and planning purposes only. They do not constitute formal medical evaluation, diagnosis, or clinical obstetrics advice.
Disclaimer: Computational estimates are based on standard clinical algorithms (e.g., Naegele's rule) for educational and planning purposes only. They do not constitute formal medical evaluation, diagnosis, or clinical obstetrics advice.
Maternal Symptoms & Clinical Guidance at Week 27
Common Physical Symptoms
- Leg cramps and restless legs when settling in for the night
- Hemorrhoids and sluggish digestion
- Shortness of breath as the uterus presses on the diaphragm
- Anticipation and emotional excitement about entering the third trimester
Clinical Action Items
- Celebrate completing the Second Trimester!
- Complete your 28-week routine prenatal bloodwork (Rh antibody screen & hemoglobin)
- Receive your Rhogam injection if your blood type is Rh-negative
- Schedule your Tdap vaccination to pass whooping cough immunity to your baby
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Frequently Asked Questions About 27 Weeks Pregnant
Yes. Week 27 marks the completion of the Second Trimester. Week 28 begins the final, critical home stretch: the Third Trimester.