Generally speaking, there is no particularly noticeable change in the abdomen of a pregnant woman in the second month of pregnancy, which in layman’s terms means that she is not pregnant for the time being. Clinically, the first day of the last menstrual period is counted as the beginning of pregnancy, usually about 2 weeks earlier than the time of ovulation or fertilization, with 4 weeks as a gestation month to calculate the second month of pregnancy, that is, 8 weeks of gestation. At the end of the 8th week of pregnancy, the embryo has taken on its first human form, but the size and weight of the embryo is relatively small, so it will not lead to significant changes in the abdomen of the pregnant woman. Some pregnant women may experience early pregnancy symptoms such as dizziness, fatigue, nausea, vomiting, and loss of appetite, so compared to the time when they were not pregnant, 2nd trimester pregnant women may be more thin, but after the later stages of nutrient intake, pregnant women’s body weight will gradually increase, and the changes in the abdomen will gradually become obvious. It should be noted that if there are obvious changes in the abdomen of a pregnant woman in the second month of pregnancy, it is recommended to go to the hospital for an ultrasound examination to confirm whether there are twins or other pathological reactions. If there is no abnormality, it may be due to obesity caused by excessive diet of pregnant women, it is recommended that pregnant women should eat reasonably and consume proteins reasonably to promote the healthy development of the embryo.