Could it be implantation spotting?

I got PEAK on a ClearBlue digital ovulation test on March 1 & 2.

On March 13, 14, & 15 I have had a tiny amount of spotting - small amount in discharge (pink) and only when wiping also not every time I wipe.

AF isn't due until March 17.

Could it possibly be implantation spotting or AF approaching?

I normally have a small amount of spotting before AF shows but normally happens a day or 2 before.

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