What not to eat in the first month of pregnancy (diet taboos and precautions for pregnant women) Pregnancy is a very important stage for every woman. A reasonable diet is the basis for pregnant women to stay healthy and for the healthy growth of the fetus. In the early stages of pregnancy, pregnant women need to pay attention to dietary taboos and precautions to ensure a healthy and smooth pregnancy. This article will detail what to eat during early pregnancy from the following four aspects: Taboo 1: Caffeinated drinks such as coffee and cola. Pregnant women need to avoid drinking coffee, cola and other caffeinated drinks because caffeine will affect the fetus through the placenta.