Possible implantation bleeding?

12DPO, I used tp to check what was going on up there as yesterday had very localised cramping in one spot, not like af cramps they were milder but then more concentrated in one area felt more like pinching/tugging? Hard to explain. Anyways checked today in the afternoon and found this. Checked 3 or 4 times later on in the day/evening and COMPLETELY clear not even a tinge of anything else. IB? I should also mention I took a clear blue early detection test in the morning which was negative. Would it have been too early if this is IB?