During pregnancy, if the right rotation of the uterus is more pronounced, the main symptom of the patient may be abdominal pain, which means that the uterus is gradually increasing in size as the weeks of pregnancy grow. Because the left side of the abdomen is occupied by the sigmoid colon and the right side of the abdomen is relatively empty, the uterus may rotate to the right during pregnancy, a condition that we call right-sided uterine rotation. This condition is called right rotation of the uterus. There are usually no symptoms of right rotation of the uterus. Therefore, if a woman has a right-sided uterus, she should closely observe the angle of uterine rotation.