Thirteen days after an abortion, if you experience a vague pain in the lower abdomen, this condition may be caused by painful uterine contractions. Most of this pain is not particularly obvious, there may be vague pain or paroxysmal pain symptoms, you can use a hot water bag or warm treasure paste hot compresses in the lower abdomen. Usually pay more attention to keep warm, pay more attention to bed rest. In addition, try to eat less spicy and stimulating food, eat less cold food, try to eat a light diet, drink more hot water or milk and so on. If the abdominal pain is unbearable or accompanied by fever on the 13th day after the operation, this situation is not normal, may be caused by postoperative infection, it is best to come to the hospital as soon as possible, do gynecological examination, ultrasound examination and blood routine. If there is any residue or infection, it may be necessary to carry out another purging operation as soon as possible under the condition of anti-infection.