Spotting on Letrazole?

Anyone have any spotting on CD 25 while taking letrazole. I got my 21 day progesterone and the dr said my levels were “good and high”. That call was yesterday, and this morning I started having very small amounts of spotting, only seen when wiping. It’s brown/peach, which I know should be old blood.

I took 2.5mg of Letrazole on CD 3-7. I have PCOS and Hashimotos and was told that the strips would be unreliable, so I’m not sure when I ovulated. However, I’ve never had a regular cycle. Always been every 2-3 months. When we got pregnant with the twins, that was a surprise. Ended in mc at 8 weeks on 12/14/18. Had a chemical on 4/1/19. I had to take Provera to induce a period to start the Letrazole.

I’m just curious if Letrazole caused spotting? Or if AF is coming early (again, never know when to expect her) or if it could be IB? Any help would be so so great, as I called my dr and he couldn’t even remember that he prescribed the Letrazole 🤦🏽‍♀️