Feta cheese can be eaten during pregnancy only if it is made from pasteurized milk. Unpasteurized feta cheese poses a risk because it may contain harmful bacteria called Listeria monocytogenes, which can cause serious infections, miscarriage, or harm to the unborn baby. The pasteurization process kills these bacteria, making pasteurized feta cheese generally safe for pregnant people to eat. However, it's always important to check the label to ensure the feta cheese is pasteurized and avoid any soft cheeses that do not clearly state this. In summary, pasteurized feta cheese is safe during pregnancy, but unpasteurized feta cheese should be avoided to prevent the risk of Listeria infection.