Am I out for this month?

Jennifer
Had light spotting once each day 9, 10, 11 dpo, and none today (12 dpo). The spotting was only when I wiped and very little. Took an hpt this morn and got a BFN. Thought the light spotting could be implantation bleeding but maybe it's AF after all? No spotting so far today though. What do y'all think?