After the fertilization the fertilized ovum continues its journey down the tube towards the uterus which takes about a week. It then becomes embedded in the wall of the uterus, which gives rise to the formation of an entirely new complete human being, and it is called the conception.
The period after the conception to the birth of the baby is known as pregnancy period.
When the baby begins to press to come out up to the discharge of the cord and placenta is known as labour period.