The pulling pain on the right side in mid-pregnancy may be caused by the uterus enlarging and pulling on the ligaments, slight contraction caused by fetal movement, appendicitis, etc. 1. As the uterus continues to grow in mid-pregnancy, the uterus will mildly rotate to the right, pulling on the ligamentous tissues in the abdomen, resulting in a pulling pain, which is generally not too serious. 2. In mid-pregnancy, when the fetal movement is more intense, it may stimulate the uterus to contract the local muscles, causing the feeling of pulling pain. 3. If appendicitis occurs in mid-pregnancy, it will also cause pain on the right side, because the uterus increases, the appendix moves up, the location of the pain may not be typical, you need to consult a doctor in time to judge. In short, mid-pregnancy should pay more attention to rest, do not strenuous exercise, if the right side of the pulling pain has been continued not to relieve or even gradually aggravated, should promptly consult a doctor, so as not to delay the condition.