It can be tough enough for moms-to-be to keep up with all the latest vaccine recommendations.
The latest new study involving thousands of women is bringing some peace of mind.
The six-year study in the American Journal of Obstetrics and Gynecology proves that getting the D-tap, or whooping cough, vaccine at the same time as the flu shot is safe and effective.
For years, doctors warned that the two shots needed to be separated by a few weeks.
Study co-author Marlene Lugg says researchers found no significant increase in the risk of fever or other adverse effects to the mother when the shots were done together.
"There was no difference in early birth, low birth weight, in any of the babies outcomes," Lugg added.
Researchers found the moms actually passed on some immunity to their newborns when they received the shots late in their pregnancies.
"We need to tell pregnant ladies this so that they understand that it's extremely safe and it protects them and the baby," Lugg said.
Also, consider this: when it comes to the flu, according to the Centers for Disease Control, pregnant women who come down with it often end up hospitalized with risk for serious complications.