Anthonysmom: the reason I asked is that although you can have a temp dip after O, it's pretty unusual. it's happened to me exactly once and the only reference I found to it in my books (the Couple to Couple League manual) said they didn't know, either LOL! but a luteal phase dip doesn't say you're either preg or not preg, so you'll still have to test eventually (meaning I hope you're late!!!)