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.
Week 34 - Immune System Develops
Week 19 - Muscle Development
Pregnancy Intimacy Guide
Week 13 - Rapid Growth Phase
Pregnancy Goal Setting
Week 39 - Final Growth
Symptom Alert System
Pregnancy Basics