The respiratory system, like many other body systems, undergoes significant changes during pregnancy to support the needs of the growing fetus. This article begins by providing a detailed overview of these normal physiologic changes, highlighting how the respiratory system adjusts to the increased metabolic demands and altered hormonal environment of pregnancy. The article will then cover updated guidelines for managing asthma, the most common respiratory condition affecting pregnant individuals. Lastly, we will briefly touch on pulmonary edema in pregnancy, reviewing possibly etiologies and risk factors as well as diagnosis and management.