It's important to know which foods are safe to eat and which you need to avoid while pregnant.
Eat a safe pregnancy diet, and learn about safe food storage and handling by following these tips from the Clemson University Agricultural Extension.

Don't eat:

* Raw meat such as sushi, seafood, rare or uncooked beef, or poultry because of the risk of contamination with coliform bacteria, toxoplasmosis, and salmonella.

* Raw eggs, or foods containing raw egg such as Caesar dressing, mayonnaise, homemade ice cream or custard, unpasteurized eggnog, or Hollandaise sauce because raw eggs may be contaminated with salmonella.

* Soft cheese such as blue cheese, feta, Brie, Camambert, and Latin-American soft white cheeses such as queso blanco and queso fresco because they may harbor harmful bacteria.

* Fish containing accumulated levels of mercury in their fatty tissues such as shark, swordfish, king mackerel, tilefish. When a pregnant woman consumes large amounts of mercury, her baby may suffer brain damage resulting in developmental delays (for example, delays in learning to walk or talk).

* Fish containing high levels of an industrial pollutant called polychlorinated biphenyls (PCBs) in their fatty tissues such as bluefish and striped bass, and freshwater fish such as salmon, pike, trout, walleye from contaminated lakes and rivers. According to the March of Dimes, consumption of large amounts of PCBs by pregnant women is linked to decreased attention, memory, and IQ in their babies. Check with your local Health Department to determine which fish in your area are safe to eat.

Exercise Caution:

* According to the March of Dimes, deli meats have led to outbreaks of a form of food poisoning called Listeriosis, that is particularly harmful to fetuses. While the risk is low, you may want to thoroughly reheat deli meats to an internal temperature of 165 degrees (including hot dogs) or avoid them altogether.
* Minimize the amount of liver you eat. According to the March of Dimes, animal liver contains very high levels of vitamin A. While vitamin A is good for you, women who consume too much may risk a higher incidence of birth defects in their babies (however, studies are not conclusive). Since you're probably already taking prenatal vitamins and eating other vitamin A-containing foods, it's better to be safe and not consume liver on a regular basis. The Food and Drug Administration (FDA) has recommended has that pregnant woman maintain their vitamin A intake around 8,000 IU and that vitamin A be taken in the form of beta-carotene, which is not considered toxic.
* According to the FDA, consumption of artificial sweeteners is safe for the general public. No studies show conclusively that it's harmful to consume artificial sweeteners during pregnancy. However, this is a personal decision, and for your peace of mind--and just to be on the safe side--you might decide to limit your consumption of artificial sweeteners during pregnancy. Instead, substitute fruit juice with sparkling water when you need a light, refreshing drink.
* According to a 1999 U.S. Health and Human Services press release, raw sprouts have led to some incidents of salmonella outbreaks. They advise that pregnant women eat sprouts that are cooked, or avoid eating them altogether.