Pregnancy can be divided .... 3 trimesters, each lasting approximately 3 months.

A developing organism during its early stages of intrauterine development up to the end of the 2nd month.

The structure on the uterine wall to which the embryo is attached and from which it receives its nourishment.

The expulsion of a foetus from the uterus through the vagina to the outside world.

Pregnancy; the period between conception and the birth of the child.