When I've been haf my periods the last 3 months it has been abnormally light the color is a medium brown and lasted 2x as long as usual. (about 8-10 days instead of 4-5) I just finished my period 7 days ago and am having very thick BLACK discharge and more than usual. (more than my regular period even) Anyone have any idea what this could be? I'm 20, been broken up and not had sex for about a month. Any advice would be welcome.