FF just changed my O date to CD 11 too, it had been at CD 14. I don't really understand it either. Now I have a few temps after O below the coverline, which doesn't seem right.
Same thing happened to me last cycle. I had a temp shift on CD 12, and it looked pretty convincing at first, but then I had another, more obvious temp shift on CD 18, as usual.
Re: For all you chart lookers..
I'd wait and see what your temps do the next few days.. It is a shift, but nothing else matches up with O and the temp may be back on the decline.
Eta: if you did O, it's not necessarily too early.
Same thing happened to me last cycle. I had a temp shift on CD 12, and it looked pretty convincing at first, but then I had another, more obvious temp shift on CD 18, as usual.
I wouldn't stop BD'ing, if I were you
Emilia Antoinette
10.03.12 at 41w5d