The fetus enters a rapid growth phase. Bones harden, and muscles develop. You might feel more energetic as nausea subsides.
Week 15 - Hair Growth Begins
Week 16 - Mid-Pregnancy Milestone
Week 19 - Muscle Development
Week 17 - Fat Layers Develop
Cycle Phase Overview
Week 6 - Limb Buds Appear
Week 36 - Descent into Pelvis
Week 37 - Full-Term Begins