Interactive Pregnancy Calendar

Week-by-Week Pregnancy Calendar

A pregnancy calendar gives you a personalized week-by-week view of your entire pregnancy — from conception to birth. See your baby's development, what symptoms to expect each week, upcoming prenatal appointments, and key milestones all in one place.

Your Baby Week by Week — Highlights

• Week 5: Heart begins beating — a tiny flicker visible on ultrasound
• Week 8: All major organs forming, webbed fingers and toes present
• Week 12: Baby now has fingerprints, reflexes developing
• Week 16: Can make facial expressions, hair beginning to grow
• Week 20: Halfway! Baby can hear your voice
• Week 24: Lungs developing, viable outside womb with medical support
• Week 28: Eyes open for first time, brain developing rapidly
• Week 32: Practice breathing movements, fingernails fully formed
• Week 36: Baby turns head-down for birth
• Week 40: Full term — ready to meet you!