Usually, early pregnancy stomach in appearance and no obvious changes, because the early fetus is small, the uterus has not exceeded the pelvis, therefore, in the abdomen can not be felt there is an increase, but the body will have other aspects of the performance: 1, the early pregnancy reaction: nausea, vomiting, regurgitation, fatigue, drowsiness, appetite for sour and spicy food, anorexia greasy and so on. Starting from the 5th week of pregnancy, many pregnant women will experience vomiting, especially in the morning and evening nausea, without any reason for vomiting; 2, breast development: due to the increase of estrogen and progesterone secreted by the pregnant woman’s body during pregnancy, the breast glands and vesicles will also grow, so the breasts will look bigger, and there may be a tingling sensation; 3, leukorrhea increase: the increase of estrogen secreted by the pregnant woman’s body after pregnancy, which is capable of Promote the cervix and related glands to secrete mucus, pregnant women’s vagina and cervix will also have congestion and swelling. So the secretion will be more than usual, and the amount of leukorrhea will also increase. With the prolongation of time, as the fetus is larger, the amniotic fluid in the uterus gradually increases, which will push the uterus bigger and bigger, usually exceeding the pelvic outlet after 3 months. Therefore, most pregnant women will have noticeable changes in their stomachs only after 3 months.