I can't seem to find an answer as to why my BBT temps are all over the place.  My chart seems to be telling me I didn't ovulate this month, even though I had what would seem to be ovulation pain.  Does anybody have temps that seem really irradic (sp?).  My temps seem to jump from day to day quite drastically even though I'm taking them at the same time everyday, under the same conditions.  Anyone else have this problem or know what can cause it?

Could it be your thermometer? Mine started acting crazy (really low readings then really high like 10 mins later)...I just got a new one and problem solved.

I would try to temp vaginally. When I temp vaginally the temperatures are always higher and much more predictable!