11-12dpo BFN, but possible implantation bleeding?

My LH peak was 13 days ago so I’m probably 11 or 12 dpo. My cycles are typically 29-32 days, and it’s CD 28. I took a CB early detection digital with FMU and it was negative. I was counting myself out this cycle.

However, when I was wiping this evening, I had creamy light pink/brown discharge on my tp. Not like early AF spottting, it was more like CM consistency. Plus when AF is coming I almost always have bad cramps the day before with brown watery spotting and clots - which is very different than what I had today. The only other time i had this, I was pregnant (it ended in loss).

Is it crazy to think this could be a later implantation and/or I tested too early?

Also if you’ve experienced later implantation please share below 👇🏼