The belly begins to gradually increase in size at 14 weeks of pregnancy, a time when the uterus is just protruding out of the pelvis and the belly is not noticeably enlarged. At 12 weeks pregnant, the uterus is just coming out of the pelvis and you can feel the outline of the uterus on the pubic symphysis. At 14 weeks of pregnancy the bottom of the uterus is about one finger above the pubic bone, so if a fatter pregnant woman can see the stomach protruding slightly, and if a thinner pregnant woman, the pregnancy can’t be seen in clothes at this time. At the end of the 20th week of pregnancy, the uterine fundus is two fingers below the belly button. At the end of the 24th week of pregnancy, the bottom of the uterus is level with the belly button. At the end of the 28th week of pregnancy, the uterus is three fingers above the belly button. At the end of the 32nd week of pregnancy, the bottom of the uterus is between the navel and the xiphoid process, and at the 36th week of pregnancy the bottom of the uterus is two fingers below the xiphoid process, etc. Do a good job during pregnancy in the mid-pregnancy checkups, as long as the fetus and pregnancy weeks match, everything within the normal range is a normal pregnancy. Any abnormality needs to be dealt with by the doctor in a timely manner.