Tmi pic help! Implantation?

Fertile week was July 23-29. About a week after I started getting crampy almost everyday with LOTS of creamy cm and my cervix is getting so high I can barely reach it and feeling firmer. Today when checking cm I had a bit if brown and now this, it's not af or not what I usually see especially since it's brown. Af due on Tuesday and got a bfn today but with a cheapie. Any insight? Going nuts!!​