Hmm, well, looking at the data you have here, I would say that you O'd around CD27. Most pre-O temps are under 97.7° F (36.5° C) and most post-O temps are over 97.8° F (36.6° C) IIRC. I work in F so I used a converter to get the C. CF, O pains, and CP don't always match up with O. Do you have a copy of Taking Charge of Your Fertility? What happens when you set FF to "FAM"? I don't know for sure if you O'd CD27 but that seems the more likely to me from the info you have. Do you have good coverage for around then?