Some One Help Please !?

okay so i have this brown discharge for about a week now i have had my period already its came and gone .. and now i have this brown discharge constantly ive been to my doctor and gynecologist results came back negative for everything and i havnt had sex in almost a year ive missed 3 weeks of my tricyclen .. ive been been to the doctors more then 3x an they keep telling me its normal . but i dont feel normal some one please tell me what could be going on ? and i shower every day i take very good care of my self . . i just dont know anything else or where else to go ? does any one have any ideas on what could be happening .. if u have anything negative to say please dont leave any comments im just looking for answers on a positive note thanks .