Hi, am on 2nd month using CBFM. I have pretty regular 29 day cycle and last month got highs on CD 9 and 10, peak 11 and 12, high 13. This month, started with highs at day 8, but now on day 17 and still no peak!! Am pretty sure I don't OV this late so what I am wondering is, is it possible for CBFM to miss OV, or have I def. not OV'ed this cycle? DH was away for most of the week so not much chance to do teh deed anyhow but would just like to know if CBFM can have missed it!