I try to keep my patients off all medications and vaccinations during pregnancy. That said, the flu shot is safe, according to the Centers for Disease Control and Prevention. The CDC recommends the flu shot for women who are at least 14 weeks pregnant during flu season. Be aware, however, that the flu shot will protect you only against the more serious strains that tend to land people in the hospital.
Some people feel achy and fatigued when they get the shot, as if they are getting a mild cold.
This is because the vaccine is stimulating your immune system so that it will recognize these nasty flu types if you come in contact with them. I believe a few days of feeling a bit more tired than usual is worth it, but every person has to decide that for herself. As with any source of medical or health care information, you should as a preliminary matter satisfy yourself that the credentials and experience of the source are suitable. The information provided through the Ask the Experts service is a general educational aid designed to help you discuss your unique medical or health concerns with your physician or qualified health care provider. You should not rely on the information as a substitute for personal medical or health care advice, or for diagnosis or treatment purposes.