The embryo forms three germ layers (ectoderm, mesoderm, endoderm) that will develop into organs. Light spotting might occur due to implantation. Take folic acid to support growth.
Normal Period Flow
Week 4 - Neural Tube Development
Week 36 - Descent into Pelvis
Week 23 - Skin Thins
Period calculator
Week 28 - Rapid Weight Gain
Baby Growth Stages
Cycle Start Guide