If you compare the size of your belly with the size of your belly before you became pregnant, the size of your belly will increase in the 5th week of pregnancy, but the changes are small and usually not visible at first glance. This is because at 5 weeks of pregnancy, the small embryo is about 0.6 cm long, the size of an apple seed and looks like a “little seahorse”, so it is not usually noticeable. However, some pregnant women may have too much sweet food in the early stages of pregnancy, combined with too little exercise causing localized fat, which may result in a more pronounced belly in the 5th week of pregnancy than before, and no clear criteria can be provided. Generally speaking, the uterus does not enlarge beyond the pelvis until after 3 months of pregnancy, and pregnant women will not see their belly bulge out until 4-5 months, at which point the size of the belly can be judged. The uterus is located in the front, the stomach will be larger and obvious, thin people because the pelvis is small, the uterus will be convex in the front. In addition, new mothers have a slimmer prenatal body shape, not much fat in the belly and stronger muscles than women who have given birth, so it looks like the belly will be smaller. It is recommended that women pay attention to balanced nutrition after pregnancy, not to be picky, usually eat more nutritious food, such as soy products, fish, chicken, etc. You can also eat more vegetables, fruits, do not eat chili and other spicy and stimulating food. Go to the hospital regularly for checkups to keep up with the development of the fetus.