If you have brown blood, you may have had your period. If you have brown blood at the normal time of menstruation and you are not pregnant, you may have had your period, but the amount of menstrual blood is small, the menstrual blood has been in the uterus and vagina for a long time, and the color of the blood is brown, or the menstrual blood is not discharged smoothly due to cold or anger, and the amount of menstrual blood will increase within two to three days. During this time, you should pay attention to keep warm, avoid getting cold, and do not eat cold, spicy or stimulating food to avoid unpleasant symptoms such as decreased menstrual flow and dysmenorrhea due to poor discharge of menstrual blood.