Spotting after opk

Adry • 29 with PCOS, married, TTC for 2yrs 6 clomid cycles and 8 letrozole, chemical pregnancy loss September 2019 trying again with IVF first FET ended In miscarriage in September 2020 and now waiting to start FET 2 🌈👼🏻

What’s does spotting after opk mean?? 2 days after opk and BDed. Can this be implant? Or am I staring a period?

It’s super light and thin and a light colored red.

I am 27 have PCOS and just had the opk 2 days after my 4th round of clomid.