Skip to content
Third Trimester (Weeks 28 - 40) Week 30 of 40
Last reviewed by medical team: June 2026 Evidence-Based Care Check
Fetal Size Comparison

Week 30 Size: Cabbage

About the size of a large green cabbage.

Length 39.9 cm 15.7 inches
Weight 1300 g 45.9 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 surrounded by about 1.5 pints of amniotic fluid, though this volume decreases as they grow and occupy more space in the uterus. Lanugo starts to disappear.

Weekly Milestones

  • Lanugo Starts Disappearing
  • Fetal Brain Folds Form
Maternal Health

Your Body & Symptoms

Mood swings and fatigue might return, reminiscent of the first trimester. You may have difficulty finding a comfortable sleeping position.

Common Symptoms this Week

Insomnia Fatigue Moodiness Lower back pain

Doctor & Care Recommendations

  • Sleep with a pillow between your knees and another supporting your back/belly.
  • Pack your hospital bag checklist.
  • Engage in gentle stretching to relieve lower back pressure.

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 30

💌

Get weekly pregnancy updates

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