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Third Trimester (Weeks 28 - 40) Week 33 of 40
Last reviewed by medical team: June 2026 Evidence-Based Care Check
Fetal Size Comparison

Week 33 Size: Pineapple

About the size of a pineapple.

Length 43.7 cm 17.2 inches
Weight 1900 g 67.0 oz

Relative Visual Scale

Solid circle represents your baby's size. Dotted circle shows the full-term week 40 size threshold.

Inside The Womb

Baby's Development

The baby's immune system is receiving antibodies from you via the placenta, providing temporary immunity after birth. The baby's skull bones remain soft and un-fused to facilitate passage through the birth canal.

Weekly Milestones

  • Antibody Transfer Peak
  • Soft Skull Adaptability
Maternal Health

Your Body & Symptoms

You might feel hot and sweaty due to an increased metabolic rate. You are carrying a lot of extra weight, making physical tasks exhausting.

Common Symptoms this Week

Feeling hot Carpal tunnel symptoms (numbness in fingers) Restless sleep Frequent urination

Doctor & Care Recommendations

  • Wear wrist splints if you experience carpal tunnel symptoms due to fluid retention.
  • Keep cool with fans, light clothing, and cold water.
  • Install the baby car seat and have it inspected for safety.

Weekly Health Guides & Resources

Trimester Guide

Third Trimester Guide

Read comprehensive clinical milestones, screening checklists, and developmental guidelines for this phase.

Explore Trimester →
Common Symptoms

Track & Relieve Symptoms

Learn why symptoms occur, home remedies, and clinical indicators for this week:

Pregnancy Nutrition

Food Safety Checklists

Verify safety statuses, listeria and mercury risks, and safe alternatives for:

Full Nutrition Guide →

Frequently Asked Questions: Week 33

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