Ok AF due today 3/3. I ovulated late. Got my positive LH surge on the 2/20 but didn't get my BBT spike of 98.20 till 2/22. I had very slight brown spotting yesterday morning only when I wiped with a BBT of 97.42. Today I have a BBT of 97.23 but still no AF. No cramps. Wonder if I would still be "too early" to be able to get a BBP. Cause I'm still getting BFN. Has anyone ever had their BBT drop during implantation or is my drop in BBT an early sign my period is gonna come. Just curious.