I have been taking ortho tri-cyclen lo for over a year now, and I always have my period during the 4th week of my pills (placebo). Well, about 5 days ago I started my period and I was only on the 2nd week of my pills. I am not sexually active, the only reason I have the pills is because they regulate my period and this is the first time this has happened. But, I can't figure out why I started my period 2 weeks early instead of while I'm taking the placebo pills as usual. Does anyone know why or how this could have happened? I'm alittle worried about this.