Letrozole

My partner and I have been trying to conceive for over a year and a half. I am on my 24th cycle. I have regular periods, 26 to 28 days. 2 or 3 day periods. I stopped doung OPKs a while back because it just stressed me out, but I think I ovulate regularly because my periods are regular. Some months I never got the full dark line.

Anyways, my question is... has anyone had success with letrozole who has regular cycles? All the sucess stories I have read about are people who started ovulating regularly when they hadn't before.