13 days after abortion, women’s reproductive system generally has not fully returned to normal, at this time, if sudden bleeding, may be due to ovulation bleeding, intrauterine infection or other stimulation, you can choose to observe and seek medical treatment according to the amount of bleeding and other accompanying symptoms. 1, ovulation bleeding: the level of hormone secretion after abortion has not fully returned to normal, if ten days later is ovulation, the fluctuation of hormone level during ovulation The magnitude may be larger, with obvious bleeding manifestations, accompanied by mild lower abdominal discomfort or lower back soreness. It is recommended to do ovulation test paper test and basal body temperature measurement to confirm the diagnosis, oral estrogen and hemostatic medicine can be taken for treatment; 2, intrauterine infection: If secondary infection occurs, there may also be vaginal bleeding, accompanied by foul smell, fever, abdominal pain symptoms, blood tests and cervical smear should be checked to confirm the diagnosis, follow medical advice and active anti-infection treatment; 3, premature sex life: recovery after abortion takes some time, if there is sex life ten days after surgery, premature If you have sex ten days after the abortion, premature sex will damage the endometrium that has just been repaired and cause vaginal bleeding, which may not need to be dealt with when the bleeding is small and short.