I do know that answer to this question, but I'm wondering if there are any women out there who consitently have an ovulation dip while charting their BBT. I will know tomorrow if it rises, we are trying right now, and I totally assumed it would rise this morning, but it went down. I have had 3 days of EGCM and ovulation pain...so hopefully it will rise tomorrow. Just owndering if there is anyone who does experience the dip. We will BD again today...4 dyas in a row..whoa:)