Originally Posted by
rainbowflower
it varies - sometimes I've had 7-8 high days before OV, other times I've had just 3. Last cycle when I used the CBFM it missed my peak (didn't detect LH surge) but OPKs did and weirdly I had 5-6 days of pos OPKs... I think BF was really messing with my hormones at the time! It's not the first cycle I've had where it missed the peak, though. I had one other cycle which was following my MC and it missed it then too so I do think perhaps it's more sensitive to hormone imbalances than anything.
this cycle already feels more normal so I'm expecting OV will be within a week
I've never not had a high on it. The "High" indicates that oestrogen levels are rising and it's the rise in oestrogen that triggers OV. The CBFM has to learn what the threashold for your oestrogen levels are before OV is triggered. Do you have EWCM? That's another way of telling when EWCM is rising so treat that as if the CBFM said "high" if you're doubting the monitor.
are you stopping DTD when you get highs/peaks?