Pregnancy Symptoms & Baby Development by Week
Symptoms: Fatigue, nausea, breast tenderness.
Baby Development: Neural tube begins forming (spine, brain).
Baby Size: Poppy seed.
Pregnancy Overview: Symptoms & Baby Development
Pregnancy Symptoms & Baby Development Guide
First Trimester (Weeks 1-12)
Symptoms: Fatigue, nausea (morning sickness), food aversions, breast tenderness, mood swings.
Baby Development: Heart starts beating (Week 6), facial features form, limbs develop, reflexes appear.
Baby Size Progression: Poppy Seed (Week 4) → Raspberry (Week 8) → Lime (Week 12).
Second Trimester (Weeks 13-27)
Symptoms: Increased energy, reduced nausea, round ligament pain, first baby movements, heartburn.
Baby Development: Can hear sounds (Week 16), gender reveal possible (Week 18-20), baby kicks & sucks thumb.
Baby Size Progression: Avocado (Week 16) → Banana (Week 20) → Ear of Corn (Week 24).
Third Trimester (Weeks 28-40)
Symptoms: Braxton Hicks contractions, swelling, back pain, insomnia, frequent urination, labor signs.
Baby Development: Opens eyes (Week 28), gains fat rapidly, moves into birth position (Week 36), lungs fully develop (Week 37+).
Baby Size Progression: Eggplant (Week 28) → Pineapple (Week 32) → Watermelon (Week 40).