Hello, everyone who replies my cycle been reg each month my cycle starts the 2nd or the 3rd of each month so when I started my cycle on 11/3/12 it only lasted 1 day then I spotted the next day then brown stuff what does this mean I took a pregnancy test 11/9/12 and it came back negative if im not strss or pregnant than what does this mean is my body just changing or what I don't know please help me!!!! %-)