The Pregnancy is the period of time between the fertilisation of an egg cell and the birth of a baby.

During Pregnancy , two special organs form inside the uterus: the placenta and the amniotic sac.

The placenta provides the fetus with oxygenand nutrients from the mother's food.

And the amniotic sac is a thin bag, it contains liquid called amniotic fluid. this fluid supports the fetus and protects it.