Letrozole and delayed AF

Hi all, anyone on letrozole and has delayed AF?

I was on clomid previously but experienced very serious side effects. We stopped clomid for 5 mths, during those 5 mths, my cycles were fixed at 28 days.

This mth, we decided to try letrozole, although I'm just 2 days late, the wait is nerve wrecking. I did not experience any PMS, eagerly took a preg test but turned out to be a BFN😭😭😭

Has anybody tried letrozole and experienced lengthen cycles??