Is it normal for the color of my period to be brown at the end of the menstrual cycle?

If the color of the menstrual blood turns brown at the end of the menstrual period, but there is no odor or other discomfort symptoms, it may be a normal phenomenon caused by the chemical reaction between menstrual blood and oxygen due to the decrease in menstrual blood volume and the slowing of blood flow. However, it may also be pathological brown menstrual blood caused by vaginal inflammation, qi stagnation and blood stasis, or uterine cold, so it needs to be diagnosed and treated according to the syndrome.

The color of menstrual blood can help us understand the health of women's reproductive organs, and normal menstrual blood should be bright red or dark red. So some people worry about whether they have gynecological diseases when they find that the color of menstrual blood turns brown at the end of menstruation. Is it normal for the color of menstrual blood to be brown at the end of menstruation?
1. Normal situation of brown menstrual blood at the end of menstruation <br/>When the menstrual period is about to end, it is normal for the bright red or dark red menstrual blood to turn brown. This is mainly because the amount of bleeding will decrease and the blood flow will slow down when the menstrual period is about to end. If the blood is exposed to the air for too long, it will undergo sufficient oxidation reaction with carbon dioxide and become dark brown.
2. Abnormal brown menstrual blood at the end of menstruation
1. Caused by vaginal inflammation <br/>If the color of menstrual blood at the end of menstruation is dark brown, but accompanied by a distinct unpleasant smell, it may indicate vaginal inflammation. This is mostly caused by the accumulation of menstrual blood in the uterus for too long. It is necessary to seek medical treatment in time to diagnose and treat the cause.
2. Caused by Qi stagnation and blood stasis <br/>Traditional Chinese medicine believes that brown menstrual blood with a light black texture is probably caused by Qi deficiency or body cold or heat. Such patients may also have adverse symptoms such as scanty menstruation and blood clots.
3. Caused by uterine cold <br/>When the color of menstrual blood changes from brown to black at the end of the period, accompanied by cold hands and feet and sallow complexion, it is a manifestation of uterine cold. It is necessary to take Chinese medicine that warms the meridians and nourishes the blood to help expel the cold and dampness in the body, thereby improving the symptoms of brown menstrual blood.