Implantation or AF

So my period isn’t due for 4 days.

I had a faint line on a test a few days ago (the one in the pic) but it wasn’t any darker this morning.

Have now been spotting since this afternoon. It’s been 6 hrs and there is only a dot on the pad and looks like this when I wipe. If any of you have had implantation did it look kind of like this? Or is af early?

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