Life begins at conception. Here are videos showing the development of a baby at its various stages in utero.
Baby Ultrasound early pregnancy 5,6,7,8,9 weeks 3D
Window on the Womb: 8 to 11 Weeks
12 Weeks - 4D Ultrasound
Baby Ultrasound at 6 weeks
A Remarkable Look At Fetal Development Through Ultrasound
8 Weeks Ultrasound
Simple truth
These glimpses into the womb during pregnancy just proves that the life that is being formed in you is already a human. You baby is alive, and to have an abortion at any time will cause this life to end in death. If you do not interfere at all chances are very good that your baby will grow unhindered and be born a living, healthy human, capable of growing into an adult, just like you.