I've been taking Ortho Tricyclin LO for about a month and since the first day, I've been having a black vaginal discharge. Normally, I see it a day or so before my cycle begins. With this discharge comes cramping and bloating, like my cycle is about to begin. However, there is never any blood. I know its a bit soon to really tell anything, but I was wondering if anyone had this happen with LO. I was on Yasmin for almost a year and was taken off due to a spike in potassium levels. I started taking LO about a year later. Again, I know its early but does anyone else have this side effect?