IMPLANTATION SPOTTING OR PRE AF FLOW

TMI TMI TMI..SORRY FOR THE PICTURES... Help pls... I dunno if this is an IMPLANTATION BLEEDING or PRE AF SPOTTING. I started spotting at 13 dpo.. ON AND OFF SPOTTING (as in very little amount). Supposedly yesterday is the start of my period so I dont mind. I thought AF is on its way..then it stopped last night... then this day I spotted again but ON AND OFF TIMES.. the first picture I took it around 2pm and the second one just now...

Its weird coz I should have a medium to heavy flow of period by this time coz it is counted as my 2nd day.

Is this a period??? Please do help me guys

This one is around 2pm exact

This one, I took it just now

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