Raw fish? A pregnant woman "can" eat sushi, but it is safer to eat other foods instead of sushi. One reason is the mercury in fish. A person who eats more than 2 servings of fish a week may be taking in too much mercury. A second reason is that sushi often has uncooked seafood in it. Uncooked seafood can contain live viruses, bacteria, and parasites; but cooking the food usually kills those things.