I have a cd27, i normally get a lh surge on cd11@11a;however, i took another ovulation test and it was positive today at 11:00a cd14 i'm confused?

Not to worry!: No woman's cycles are 100% identical every month & tthe hormones regulating cycles are VERY complex. A small variation in the rate of maturation of the ovarian follicle can lead to a variation in the timing of the LH surge which can last from 24 to 48 hours. What you observed is a perfectly normal, modest hormonal variation. It's not until menopause that the cyclic variation goes away.