During pregnancy, expecting moms are very careful of everything they put into their bodies, so there may be concerns about receiving flu shots. The flu vaccine, however, is deemed safe at any stage of pregnancy and while breastfeeding. Flu vaccines have been given to millions of pregnant women over the years, and no study has ever found a link between flu shots and problems for mom or baby. There is, however, clear evidence that getting the flu while pregnant is a problem. Your heart and lungs have to work extra hard while you are pregnant and your immune system can also be affected. This makes you more vulnerable to catching the flu and being hospitalized with serious complications such as pneumonia. These complications may cause preterm labour and birth putting you and baby at risk. Fever – part of the flu - can increase the risk of neural tube defects and possibly miscarriage. Evidence also shows that babies whose moms had the flu during pregnancy have a higher risk of neurological problems. The flu shot is therefore highly recommended for expectant moms.