birth control
"I've started using Tri-nessa in order to skip my period -which is supposed to happen while I'm on my Caribbean vacation.  I usually have a period that lasts 7 days.  Just last month, while on Tri-Nessa, I had a period that lasted TWO ENTIRE WEEKS!!  And I didn't miss one pill!  I'm terribly worried that the same thing is going to happen this month.  By the way, I never had this problem with Ortho-Tricyclen."