Huh..I'm Starting to Wonder

Okay, so I got a negative pregnancy test this morning using FMU. Well, when I went pee an hour ago, there was a faint wash of bright pink with a tiny drop of fresh red blood. AF is due Oct. 3rd and I'm wondering if maybe I just experienced implantation. I had some 'poking' cramps yesterday afternoon in the right side of my uterus. Am I getting excited for nothing? I don't wanna have my heart broken..

I wish I would have taken a photo of the bathroom tissue I used...but after dropping a phone in the toilet I stopped bringing it in with me.