Hi, After coming off the Pill my LP was 9-11 days. I started taking 100mg of B6 and I don't know how long my lp was because we fell pg on that cycle. I have heard a lot of people getting an increase of 1-2 days to 3-5 days. I'm assuming yr gyno did a post O progestrone test as this can be the other reason for short lp and problems carrying a pg. Hope you find some answers.