What foods should pregnant women eat in three months? Pregnant women need more nutrients during pregnancy to maintain their own health and the development needs of the fetus. Especially in the first three months of pregnancy, nutritional intake becomes more important. Here are some dietary suggestions for pregnant women in three months. Eat more protein Protein is one of the more important basic nutrients for pregnant women. Pregnant women need nearly twice as much protein during pregnancy to meet the needs of fetal development. The main sources of protein include lean meat, eggs, fish, tofu, milk and other foods. In the diet of three-month pregnant women, lean meat, eggs, and fish are the most important foods for pregnant women.