Change in cycle after taking Letrozole?

Has anyone experienced changes in their cycle after being on Letrozole? When I was on Chlomid it extended my cycle by 5 days. So my period was always “late” compared to what I’m use to.

My period was due today but no signs of it. I thought I started to see signs of my period coming 2 days ago but now I’m wondering if hopefully that was implantation bleeding.

I have zero symptoms of pregnancy. No fatigue, sore boobs etc.

After 2 losses this past year I’m too nervous to test. Anyone have any insight? I know I’m probably setting myself up for failure but I was sooo hopeful this was the month! 😞