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First Trimester (Weeks 1 - 13) Week 7 of 40
Last reviewed by medical team: June 2026 Evidence-Based Care Check
Fetal Size Comparison

Week 7 Size: Blueberry

About the size of a fresh blueberry.

Length 1.3 cm 0.5 inches
Weight 0.5 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 baby's brain is growing rapidly, generating about 100,000 new brain cells every minute! Tiny nostrils, mouth, and eye lenses are forming, and the limb buds are developing joints.

Weekly Milestones

  • Brain Rapid Growth
Maternal Health

Your Body & Symptoms

Your uterus has doubled in size over the last five weeks. You may notice your clothes feeling a bit snugger around the waist, though you probably aren't showing yet.

Common Symptoms this Week

Increased morning sickness Saliva buildup Cravings or food aversions Mild pelvic pressure Heartburn

Doctor & Care Recommendations

  • Stay hydrated—sip water throughout the day rather than drinking large amounts at once.
  • Invest in a comfortable, supportive bra.
  • Look into low-impact exercises like prenatal yoga or walking.

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 7

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