TMI - what kind of bleeding is this? 11dpo

I am 11 dpo and af is due in 3 days. Today at work I went to the bathroom and wiped and saw pinkish blood. I assumed af came early and put a tampon in. My first day is usually very heavy so I used a super! Just got home 6 hours later and this is what I found. From the cramps and way I was feeling I could’ve sworn I had a normal af. Instead there is this brownish stuff. Has anyone ever experience this? Could it be old blood? Implantation bleeding? Af? Am I out? So many questions lol. I know there could be many answers but I’m curious if this has ever happened to anyone and what ended up happening. Sorry for the graphic nature but I’m so confused and the support on here is amazing. Thanks!!