Yup, it dips then the next day spikes up by quite a bit. Goodluck...we are pretty close I think in our cycles so we'll have to keep each other informed. Did yours drop and spike yet? Goodluck to all of us TTC-ers this month!
P.S. I had posts on here about all this BBT-ing stuff and I remember someone saying the dip means you have ovulated so you should BD a day or so before and continue for a few more days following the dip...thats why they say you should chart for 3 months to predict when you will dip and time your BD-ing around it....but I could be wrong, maybe read up some of my posts on that to see.