Hiya,
dont know how much ill be able to help, but here it goes..
(I used it for 4 months when i gt pg, so when i mc i hadnt used it for 3 months. Anyway, ..) Once i started using it again, it gave me nearly a week of highs, however i was only fertile right before, i could tell by ewcm, and the first cycle it nearly always seems to do this.
So, to answer your question, i think i had 5 or 6 days of highs.
Good luck, babe!! (the cbfm was very lucky for me

)
xxx