“The American College of Obstetrics and Gynecology recommends pregnant women limit caffeine to 200 milligrams (about what is found in two cups of coffee) daily in order to minimize the risk of miscarriage, premature labor, and low birth weight,” says Heikkinen. “However, a 2020 review published in the British Journal of Medicine concluded there is no safe level of caffeine intake during pregnancy. Pregnant women should discuss their caffeine intake with their doctor.”