A seven-month pregnant belly should be at its highest at 3 horizontal fingers above the navel, and it will be larger if you are obese. The height of the uterus will increase by about 8 to 10 millimeters each week from about 16 to 36 weeks of pregnancy, with an average increase of 9 millimeters. At about 36-40 weeks of pregnancy, the uterine height will increase by 4 millimeters per week, and the seven-month pregnant belly is about 3 horizontal fingers above the belly button. Factors affecting the size of the fetus are mainly pregnancy nutrition, pregnant mothers with adequate nutrition, the fetus will be relatively large, the number of fetuses, the more the number of fetuses, the pregnancy belly will be slightly larger, if both parents are taller, then the fetus is more likely to be on the large side. The larger the fetus the larger the pregnant belly, at the same time, the more obese the pregnant woman pregnant belly will also be larger. There are many factors that affect the size of the pregnant woman’s belly, pregnant women who find that the fetus has abnormalities, should seek medical attention in a timely manner.