The embryo develops in the uterus, which is a pear-shaped organ located in a woman's pelvic region.

Here's a breakdown of the process:

1. Fertilization: Sperm fertilizes an egg in the fallopian tube.

2. Implantation: The fertilized egg (now called a zygote) travels down the fallopian tube and implants itself in the lining of the uterus.

3. Development: The embryo grows and develops within the uterus, nourished by the placenta.

Let me know if you'd like more information about any of these stages!