 [ Symptoms ] how do you prevent flu during pregnancy [ Disease ] get a flu shot to prevent the flu do not use flumist the nasal spray influenza vaccine it is not recommended for pregnant women to prevent exposure to flu during pregnancy wash your hands often avoid crowds avoid contact with people who have a cold do not touch your eyes nose or mouth germs are often spread when you touch a contaminated surface and then touch your eyes nose or mouth in addition call your doctor if you have trouble breathing your symptoms do not improve or get worse after three to four days after feeling a little better you develop signs of a more serious problem some signs of a more serious problem are a sick to your stomach feeling vomiting high fever shaking chills chest pain or coughing with thick yellow green mucus