Stucki-
Do you think it's the soy that is throwing things off?
I also wanted to throw this out there.... I have no idea if things will work out for me this month (i kinda doubt it), but the difference that the acupuncture and herbs made with my chart is unbelievable! November was super jaggedy with very irregular temps, and in my December chart the temps are really steady. The whole point of the acupuncture and herbs was to regulate my hormones and at least so far, it looks like it is working! (I think you should be able to see both months if you click on the chart in my signature)
I had no faith at all that it would make any sort of difference, but it looks like I might be on to something....