Week 22: Week 22: Lungs Begin to Develop

The baby's lungs begin to develop. Footprints and fingerprints are forming, and the baby begins to develop a sleep cycle.

Baby's Size

Size Comparison

Spaghetti squash

Weight

About 600 grams

Length

About 11.8 inches (30 cm)

Trimester

Second Trimester

Read About Baby's Development