Bright Red Spotting 3dpo & High Fertility OPK

Ellen • TTC #2 🌈🌈🌈👶🏻 PCOS | IVF Baby girl born November 2018 🎀 Angel baby boy born April 2022 👼🏻

I’ve been using the Clearblue digital opks and have had 7 days of high fertility (flashing smiley) but no peak fertility days. The glow calendar says I ovulated 3 days ago. My bbt has been all over the place so it’s hard to tell. Today I’ve had some bright red spotting.

Is this ovulation or could it be implantation bleeding? Any thoughts/advice is appreciated!