12dpo...still BFN but listen..

Co
I took a frer test 8dpo- neg. 10dpo- neg. tweaked tweaked and said they seen the start of something, without the tweak nothing was there now at 11dpo I had pink spotting, it's gone now I'm 12dpo took another test came back neg again... is it possible I just implanted yesterday? Even though I ovulated on the 8th?!