Thanks OP. My naturopath has asked me to start charting BBT from next cycle. I guess because I didn't have natural cycles at all until I started all the AC stuff I forgot all about the natural stuff. But I did use my body's CM to tell me when I was ovulating (and the twingy pain I get). If I'm not in the family way this time I'll certainly be relying more on my body than I was previously - I feel like I'm learning more every cycle which is great.