Feeling hungry all the time in the third month of pregnancy is a normal reaction in early pregnancy, which may be related to the increased hormone level of pregnant women, the increase of nutrients required by the fetus, and gestational diabetes. 1. Increased hormone level: after pregnancy, due to the increase of estrogen in pregnant women, it will lead to slight edema of the mucosa of the gastrointestinal tract, with clinical manifestations of nausea and vomiting, and there will also be pregnant women who always feel hungry, manifesting as an increased appetite. 2. Nutrients increase: during pregnancy, the fetus will need more and more nutrients for growth and development, and the organism consumption of the pregnant body will gradually increase, and pregnant women will frequently feel hungry; 3. Gestational diabetes: if a pregnant woman has gestational diabetes, it will also lead to hunger, thirst and other organism reactions. Pregnant women are advised to rule out the possibility of gestational diabetes during prenatal checkups. During pregnancy, it is recommended to eat less and more meals, try to eat a light diet, and eat more nutritious and easily digested and absorbed foods, such as lean meat, milk and eggs. Do regular maternity checkups during pregnancy and pay attention to your own health and that of your fetus.