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First Trimester (Weeks 1 - 13) Week 9 of 40
Last reviewed by medical team: June 2026 Evidence-Based Care Check
Fetal Size Comparison

Week 9 Size: Green Olive

About the size of a medium green olive.

Length 2.3 cm 0.9 inches
Weight 2 g 0.1 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 embryonic stage ends, and the fetal stage begins. The baby's basic physiology is in place. Joints like elbows and knees are functioning, allowing the fetus to move its limbs.

Weekly Milestones

  • Transition to Fetus
  • First Joint Movements
Maternal Health

Your Body & Symptoms

Hormone production is peaking, which might make you feel emotionally sensitive. Your waistline is expanding, and you may experience headaches or dizziness.

Common Symptoms this Week

Mood swings Nausea Frequent urination Headaches Fatigue Mild bloating

Doctor & Care Recommendations

  • Stand up slowly to avoid dizzy spells.
  • Try cold foods if hot foods trigger your morning sickness.
  • Start moisturizing your belly, hips, and breasts to soothe dry skin.

Weekly Health Guides & Resources

Trimester Guide

First 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 9

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