Originally Posted by
foxtrotmama
What are you doing to sway? A lot of the sway tactics can dry up/prevent/change CM. Have you been doing any OPKs before today? Going off of the CM alone I would be inclined to think O was delayed, not early.
It's interesting that your cycle matches up with the calendar. A variation of 1-3 days between cycles (28-31 day cycles) isn't unusual, but it would be incredibly convenient for it to line up with the calendar. I would be careful to chart by cycle day though, not just date.