Head hair thickens. The fetus is about 15 inches long. Practice breathing exercises for labor.
Week 39 - Final Growth
Week 33 - Fat Accumulation
Week 22 - Lung Maturation
Week 5 - Heartbeat Begins
Week 9 - Fetal Movement Starts
Week 12 - End of First Trimester
Week 20 - Halfway Point
Week 13 - Rapid Growth Phase