Giving birth to twins

The problem is that almost in all cases of the pregnancy with twins, women gave birth to children before the necessary period of 9 months. It is connected with the reason that the female uterus is not able to stretch out more than the nature allows. That is why the load on the uterus increases and birth pangs start. That is why twins are born before the time comes. Usually they are born during the 37th week of pregnancy and only a few of them, 10% in particular, stay in their mothers belly until the 40th week of pregnancy.
And the most important aim of the doctor and the mother is to keep the child in the belly as long as possible. If there is necessity the woman is put to the hospital. And the preterm delivery is regulated with the help of medical substances.
The modern trend is the increase of the number of women who have the cesarean section. Every second twins are born in artificial way today.