Implantation bleeding, period, or my imagination?

Imogen

Been TTC since January, and I was due to start my period either today or yesterday (13/14 DPO). Earlier on this afternoon I had a tinytinytiny amount of brown discharge and a negative test. I got some super mild cramping a bit later but only lasted 10 minutes. Then nothing the next two times I went to the bathroom, and just now I got this. Is there some pink on the tissue or am I imagining things? If I wipe clean in the morning should I take another test? I'm fairly sure I'm just getting my hopes up again for nothing, but thought I'd ask.