Skip to content
Third Trimester (Weeks 28 - 40) Week 38 of 40
Last reviewed by medical team: June 2026 Evidence-Based Care Check
Fetal Size Comparison

Week 38 Size: Leek

About the size of a long leek.

Length 49.8 cm 19.6 inches
Weight 3100 g 109.3 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 is accumulating fat and refining their brain and nervous system. The baby's eye color is developed, though it may change during the first year of life.

Weekly Milestones

  • Full Term Milestone (38 Weeks)
  • Nesting Instinct Peaks
Maternal Health

Your Body & Symptoms

You are likely feeling very eager and physically uncomfortable. You might experience a burst of energy known as the 'nesting instinct'—use it wisely and don't overexert yourself.

Common Symptoms this Week

Nesting instinct Swollen ankles Heavy pelvic pressure Anxiety or excitement

Doctor & Care Recommendations

  • Avoid heavy lifting or climbing ladders if you get the nesting urge.
  • Sleep as much as possible; rest is your priority.
  • Review your birth plan and make sure your support team is ready.

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 38

💌

Get weekly pregnancy updates

Sign up to receive developmental milestones, medical symptoms, and expert tips tailored to your specific week of pregnancy.