**update** I f found a thread with more info HERE.
Quote:
It's not really the dip, it's the post ovulation temps that count. Not everyone has an ovulation dip every month. Last month I got an ovulation dip 6 days before I actually ovulated. The dip is an estrogen surge which happens before you get a LH surge. Temping only confirms ovulation. Once ovulation happens, your progesterone rises causing your temperature to rise. Your temperatures rise after ovulation and drop when AF comes. So just because you are having a dip doesn't mean that you are ovulating.