Color of blood during menstrual period

Menstrual flow can vary across different women and can even vary for the same woman during different menstrual cycles. Menstrual bleeding can vary both in duration and quantity. The color might change from dark red to light red, for example. Brown discharge is not uncommon, too. Dark red menstrual blood is usually caused by the normal inner lining of the uterus detaching. The light red blood during menstruation is usually caused by the final light bleeding that usually marks the end of the menstrual period. The brown discharge might be clots of coagulated blood that have to be expelled from the uterus. So, as you can see nothing you mentioned is considered pathological or cause for concern. However, if you suspect that there is a larger problem occurring during menstruation, you can see you gynecologist who can review your medical history and perform necessary examinations.