You can eat pork belly in early pregnancy. You can generally eat normally during pregnancy. After pregnancy, as both mother and fetus need sufficient nutrition, usually pay attention to strengthen nutrition, eat more protein and vitamin-rich food, pay attention to diet diversification, do not picky and partial food. In the early stage of pregnancy, the pregnancy reaction may be strong, so pay attention to eating more fresh and easily digestible food, less stimulating food, do not eat too much, eat less and more meals. After the pregnancy reaction is reduced, eat more foods rich in iron, calcium and lecithin, and eat nutty foods appropriately. Nutty foods are good for fetal brain development, and pay attention to low salt, low fat and low sugar diet while ensuring nutrition.