Yes. Getting pregnant at your age (or beyond) can produce risks that a younger woman is less likely to experience.
To the baby, there is a greater chance of miscarriage or abnormal development.
To you, there is a greater chance of gestational diabetes, high blood pressure and bleeding.
While every expectant mother needs to be under the care of an Obstetrician, mature women usually have to be under more intense monitoring. The OB should conduct prenatal tests to insure that the baby is developing properly.
Maintaining a healthy lifestyle is extra important for mature mothers. No smoking is very important, as is a diet rich with Folic acid. (found in cereals & whole grains, leafy greens, black-eyed peas & pinto beans and OJ)