I have had 3 miscarriages and 1 live birth. My cycles have been 24-31 days so, My Dr put me on Letrozole a few months ago with the hope that my cycles would be 27 +/- 1 day. I am starting the 4th cycle with meds....my cycles have been consistently shorter at 25 days. i get a +OPK around day 11, with well timed intercourse, but no pregnancies. Any suggestions? How long do I stay on Letrozole and keep trying before I move on?View Thread