At 1 week of pregnancy, the belly of the pregnant woman will not bulge out, the fertilized egg may have just been laid during this period, and the pregnant woman’s body shape will not change. Until the 8th week of pregnancy, the fertilized egg develops into an embryo, which has not yet taken on a human form and is small in size, and the belly is basically not bulging out. Until the 12th week of pregnancy, the uterus is generally located within the pelvis, and the uterus may not be palpable by hand. After 12 weeks of pregnancy, when you are already 3 months pregnant, the fetus is gradually taking shape, the uterus is gradually increasing in size and rising into the abdominal cavity, the abdomen is gradually bulging, and the enlarged uterus can be touched at the pubic symphysis, and when you are 16-20 weeks pregnant, the bulge is more obvious, and you can see the abdomen bulging out clearly. If you feel your belly bulging when you are 1 week pregnant, it is mostly a subjective assumption that you know you are pregnant and often stare at your belly, thinking that your belly will be slightly bulging compared to the pre-pregnancy period. It is advisable not to be too concerned about the changes in your shape in early pregnancy and to relax.