Start of AF or implantation

I’m 10 DPO today my period is supposed to come either Thursday or Saturday.. so 2-4days away.. and when I wipe I get this it’s only when I wipe never in my undies… I also get a yellow tint CM too.. I’ve never get spotting before my cycle AF always just shows up

At 6dpo- it was light pink

Then 7dpo it was pink/ brownish red

8dpo it stopped

9dpo - yellow tint with some reddish brown spotting

Now thsi..

It only happens when I wipe

I’ve tested and I get a BFN