Early pregnancy will cause symptoms of chest tightness, shortness of breath and difficulty in breathing, which are normal early pregnancy reactions, because after pregnancy, hormonal changes will occur in the body, such as estrogen and progesterone significantly increased, resulting in a series of uncomfortable symptoms, such as dizziness, nausea, chest tightness, shortness of breath, etc. After pregnancy, due to the development of the fetus and malnutrition, it will lead to anemia, and serious anemia will also lead to discomfort. After pregnancy, due to frequent vomiting, it is easy to cause hypotension and hypoglycemia, which will lead to dizziness, difficulty in breathing, sweating, panic attacks, etc. When discomfort occurs in early pregnancy, you need to go to the hospital for routine blood tests, blood sugar tests, and blood pressure measurement. According to the specific situation to choose the appropriate treatment, usually pay attention to strengthen the diet and nutrition, at the same time, it is recommended to appropriate activities, can enhance physical fitness.