There are many reasons why there is a bit of blood after ten days of menstruation, and common reasons include ovulation bleeding, early menstruation, and gynecological diseases. 1. Ovulation bleeding: occurs in the middle of two menstrual periods, ovulation due to a brief decline in estrogen levels, a small amount of endometrial stripping, regular vaginal bleeding, bleeding is relatively small, usually 2-3 days to stop, the leukorrhoea is thin and pulsatile, may be accompanied by mild discomfort in the lower abdomen. 2. Early menstruation: the bleeding is like usual menstruation and lasts about the same time, which is mostly seen in ovarian luteal insufficiency. 3. Gynecological diseases: Common gynecological diseases such as cervicitis, fibroids, cervical cancer, etc., can lead to vaginal bleeding and may be accompanied by abdominal pain. Ten days after the menstrual period and a little blood there are other possibilities, should be timely to the hospital outpatient clinic, clear cause, under the guidance of a professional physician for treatment, do not self-medication, so as not to delay the condition.