1. Symptoms of asthma in pregnant women During pregnancy, the respiratory tract is affected due to the enlargement and expansion of the fetus and the symptoms of asthma appear. The main symptoms are shortness of breath, difficulty breathing, and even wheezing. 2. Analysis of the causes of asthma in pregnant women 1. The growth and expansion of the fetus: As the fetus continues to grow, it will gradually expand and compress surrounding organs, including the lungs and respiratory tract. 2. Changes in hormone levels: Hormonal levels in women’s bodies undergo great changes during pregnancy. One of the hormones called progesterone can