Pregnancy is a normal but altered state of health. The majority of women maintain perfect health throughout pregnancy and the postpartum period. Pregnancy is however a time where the body is undergoing tremendous changes and health problems can arise. As long as you and your baby are doing fine, your checkups will follow a schedule as this one:

From the first visit to 28 weeks Every 4 weeks
From 28 to 36 weeks Every 2-3 weeks
From 36 weeks to delivery Weekly

If you develop a problem during your pregnancy, or you had a significant medical problem prior to pregnancy, you will need to see a doctor more often.