I, luckily, have been really regular in my O date. For the last 5 months it's always been on CD 14. This month it's CD 17 and it still hasn't shown. Needless to say, I'm a little concerned. The only thing that is different this month is that I started taking B Complex to help lengthen my LP. I'm just curious if anyone has taken it and it's delayed O. I'm not sure what else the delayed O could be due to! Thanks girls!