It can affect pregnancy.

Chromosomal abnormalities are congenital and are most likely caused by problems with the union of your parents' germ cells. No medication can change this.

It is true that you still have a chance to have a healthy baby, but in order to prevent the birth of a deformed fetus, it is best to have a prenatal genetic diagnosis in time, if it is a healthy baby, then you can continue the pregnancy, if it is a deformed fetus, then you have to terminate the pregnancy in time.

If you don't want to form an embryo through natural selection, you can consider using artificial insemination, selecting chromosomally normal eggs and sperm to combine, so that the embryo formed by the chances of being normal are much greater. But this method is technically more demanding and expensive.

It can be said that a good prenatal genetic diagnosis is an important means of ensuring a healthy baby.