Final answer:
Pregnant women are screened for gestational diabetes typically between 24 to 28 weeks of pregnancy during the second trimester.
Step-by-step explanation:
Pregnant women are typically screened for gestational diabetes during the second trimester of their pregnancy. This screening often occurs between 24 to 28 weeks of pregnancy. Gestational diabetes is a condition that can develop during pregnancy where the body does not produce enough insulin to handle the increased blood glucose levels. This is why screening is important as it allows for early detection and management to ensure the health of both the mother and the fetus. During the second trimester, the fetus grows significantly and begins active movement, and the mother may feel the first movements. The placenta, which has taken over the function of nutrition and waste management, is fully operational, and the demand for glucose in the mother's body is increased.