Fingernails and toenails start to appear. The fetus is about 1 inch long. Mood swings may occur due to hormonal changes.
Week 23 - Skin Thins
Week 31 - Bone Strengthening
Week 36 - Descent into Pelvis
Week 20 - Halfway Point
Week 38 - Organ Maturation
Week 2 - Embryonic Stage
Week 19 - Muscle Development
Week 35 - Preparation for Birth