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How long does implanation bleeding lasts? - implanation bleeding

Is this implantation bleeding?

... I started on the period of a week, and) today (light and then I had cramps and brown and pink discharge Type I (was) a little sticky and thick

... The cramps are not yet complete, but stopped the bleeding

"Can someone explain what might be"
((I've tested this morning and it was negative, but I think I tried before ... did not even 2 weeks))