Mommas I'm clueless and need your help

Thursday night (10 dpo) I had sharp pinching in my right lower abdomen. It was only 4 or 5 pinches. I took a pregnancy test that night and it was a BFN.

FAST FORWARD to today at 12 dpo I woke up to go to the bathroom around 430 am and there was very very light pink bleeding. I went back to bed and woke up around 830 and it was still there when I wiped. I put on a panty liner and there isnt much on it but its darkened up.

I've been checking frequently and sometimes there is a very small tint when I wipe and sometimes there is none there at all and there isnt anything new on my pad since early this morning.

Is this period or implantation. I am now 12 dpo with an expected period in 2 days.