In this study session, you will learn about some of the changes that occur during pregnancy in the uterus, cervix and vagina, the cardiovascular system, gastrointestinal system, and urinary system, and about changes in the breasts and skin. You will also learn about the implications of all these changes for you as a health worker managing the health of pregnant women. By understanding the normal changes of pregnancy, you can reassure the woman if she is concerned, and also detect and intervene more quickly if you notice any abnormalities. A basic knowledge of these changes and adaptations is also critical for understanding the results of laboratory tests that may be conducted at a health facility during the pregnancy.