I have only been charting for 4 months and for 3 of those my LP ranged from 9-12 days so I started taking the vitex when I AF showed up this cycle, I am taking the liquid form though, which tastes really disgusting, even in juice, like it was suggested but I just couldn't see me remembering to take the tablets 3 times a day, I am also taking EPO to try to help increase my CM, so we will see how it goes.