Implantation or Early AF?

So I am 10 DPO. AF is due on Thursday. I broke down and speed on a stick with my first pee this morning. It was negative. Not even a hint of a vvvfl. I came home this evening and found this.

Wiped again and it was really dark brown. I am never early and I never spot. Could this be implantation bleeding? Or did mother nature say a big FU and my AF came super early? I'm posting my BD chart below. I don't measure my bbt or really chart cm because I don't want to stress myself. We have been trying since August. Should I test again tomorrow?