Third trimester chest distress shortness of breath dyspnea

Chest tightness, shortness of breath, difficulty breathing in the third trimester of pregnancy is likely to be an enlargement of the uterus, causing the diaphragm to rise, resulting in a smaller chest space, so insufficient inspiration, unable to fully supply oxygen. Pregnant women can get up or maintain a semi-sitting position when breathing difficulties occur, or they can go out appropriately.