All are possible sources of bacteria that can harm an unborn child. You'll be better off giving up that cocktail after work, too. Too much drinking during pregnancy can cause physical defects, learning disabilities, and emotional problems in children, so many experts recommend that you give up alcohol while you're entire pregnancy. And you might want to skip caffeinated beverages, especially early on in your pregnancy. That may be a snap for women who are suddenly revolted by the stuff during their first trimester.
Caffeine also lurks in teas, colas, other soft drinks, cocoa, and chocolate.
You can switch to decaf brews and decaf sodas instead. I went cold turkey. A vitamin-mineral supplement is probably a good idea. But in the real world a vitamin-mineral supplement is good insurance that a pregnant woman will be able to meet her nutritional needs. Later on in your pregnancy you may need to take iron or calcium supplements to make sure you're getting enough of these key minerals.