1. Why do pregnant women often sneeze? There are many reasons why pregnant women often sneeze. The main reason is that changes in hormonal levels during pregnancy lead to changes in immunity, making the body of pregnant women more susceptible to infections. In addition, the nasal mucosa becomes more sensitive during pregnancy, which can cause allergic reactions and sneezing. 2. How to relieve sneezing during pregnancy? 1. Keep indoor air fresh: Use an air purifier or open windows for ventilation.