Fetal Development: Three Key Stages ✨👶🏻 . . ### Important Information About the Three Stages of Pregnancy 1. **First Trimester (Weeks 1-12)**: - This stage is crucial for organ development. By the end of week 8, the embryo has developed distinct human features, including the formation of the head, eyes, mouth, and limbs. Most major organs begin to take shape during this period. The embryo is referred to as a fetus after week 8, marking the transition to the fetal stage. 2. **Second Trimester (