I'm on cycle 2 of Letrozole, on cycle 1 I had tracking and ovulated CD13. I'm on CD16 now and been testing at least twice a day since CD9 and the lines have been sooo faint like barely there and I've had no mucus. I did have mucus on days 7, 8 and 9 though and today I have tender breasts which I always have about a week after O. So I think I must have ovulated on day 8 or 9? That can't be normal because they don't start tracking scans until day 9. It means we probably missed the boat and it's a total wasted month because we didn't start DTD until CD10. Does this mean Letrozole isn't working properly for me?