I have been prescribed letrozole because, although I am ovulating on my own, it is usually around cd16-18 and then I have a short luteal phase as my cycle lengths are around 24 - 26 days. Apparently letrozole may cause a stronger ovulation, and therefore lengthen luteal phase.
Although my natural cycles make it difficult to get pregnant, I am able to track them fairly well with strong OPK+ the day before and day of ovulation (I assume). I also have EWCM for around 4 days.
This first cycle on letrozole... nothing! And I am on CD16 (would have expected an OPK+ or a darkening line definitely by now. Not even a hint of EWCM. I am actually even starting to think I O-ed without knowing, as I have progesterone-y symptoms like sore boobs!
Any experience out there?