My menstruation quantity is very few, 7 days menstruation has a bit more before two days only, when

Normal women's menstrual volume is about 30-50 ml. If the menstrual volume is less than 20 ml, it belongs to too little menstrual volume, which is more common in patients with insufficient qi and blood, anemia and cold uterus. You need to go to the hospital for relevant examinations to confirm the diagnosis. If anemia is caused, you can eat more iron-rich foods or take iron according to the doctor's advice.