Two weeks later, Lucy was born, at about 27 weeks gestation.

The second trimester of pregnancy begins at 13 weeks gestation.

Less likely they occur after 20 weeks gestation; these are termed late miscarriages.

Some were so tiny, having been born at under 30 weeks gestation and spent several months in incubators.

This benefit was extended to pregnant women over 12 weeks gestation.

All mothers also have preterm labor starting anywhere from 25-38 weeks gestation.

At 27 weeks gestation, only 1% of a fetus' body weight is fat.

In each pregnancy, the fetus stops growing after 10 to 12 weeks gestation.

Administration of corticosteroids is indicated prior to 32 weeks gestation.

Lithopedia may occur from 14 weeks gestation to full term.