Hint of hope ???

So I’m 21 days late and yesterday (at 20 days late) around 2pm ish i has pinkish spotting so I automatically assumed AF was showing up so I was bummed out 😞 every time I’d go to the bathroom I’d check again to see, but it was starting to go away, only way I’d actually get any of the pink was if I would go into my vagina with the toilet paper and today this morning I wiped and went in again and it’s gone !! So could it be AF starting to come or possible implementation bleeding? And i just ovulated late ? I’ve also been testing every few days since missing my period (last period was June 23rd.) and kept getting BFN. Thank you in advance 💕