How does a pregnant woman take care of her food?

How does the pregnant woman’s food affect the fetus? What is most necessary for the pregnant woman is a balanced and healthy diet, so how can the pregnant woman take care of her food?
In the first trimester of pregnancy (from its beginning to the end of the third month approximately)
Pregnant women should pay attention to foods rich in folic acid for its role in preventing fetal abnormalities: legumes, green leafy vegetables, red meat and whole grains.
Pay attention to foods that contain calcium: milk, dairy, and cheese.
Drink water and eat fruit.
Avoid alcohol and smoking, as well as reduce the amount of caffeine.

In the second third, in addition to the above, you should pay attention to the following:
Divide your food from five to six light and nutritious meals and not leave yourself without food for a period exceeding four hours, in order to avoid nausea, vomiting and fatigue (except in cases of fasting while following the development of the fetus and the status and vitality of the mother).
Enrich your diet with iron found in meat and chicken, legumes (lentils, beans, beans) and green leafy vegetables (spinach and chard).
Vitamin C (lemon, orange, broccoli, capsicum)
Eat carbohydrates such as rice, potatoes, pasta and bread in moderate quantities, and try to choose brown carbohydrates, brown bread, bulgur, brown rice and brown pasta.
Avoid foods that may cause you heartburn, such as fried and fatty foods.
Do not eat a lot of foods that may cause you constipation, such as: tea and bananas, and eat vegetables and fruits (especially dried ones).
Drink at least 8 glasses of water per day

By the end of the second trimester and the first of the third trimester, the pregnant woman's body is more likely to develop diabetes, called gestational diabetes
Therefore, you should pay attention to eating fatty sweets and replace them with unsalted fruits and nuts or with light sweets
Drink enough water and fluids.
Reduce salt in cooking and avoid foods rich in salt such as chips, salted nuts and canned food.
At the end of the last third, in addition to what was mentioned, I would like to pay attention to milk, dairy and cheese.
Stay away from alcohol and smoking, in addition to reducing the amount of caffeine.