It got my period 1/6/13 ( which was a day late ) my period ended on the 1/14/13 then on the 1/18/13 I started to bleed again (dark reddish color) and cramping and feeling bloated what could be the problem helllppppp

Women cycles often change and last longer. How old are you ? Are you sexually active?
How regular are your cycles normally? When was your last check up