So...input please?

Ashlee • 20 years young (: ttc rainbow baby. baby dust and sticky baby's to all!
I'm a week late for AF, my cm is anything but dry and sticky. It's very watery with some white. There's more than I'm used to as well (sorry if it's tmi). I'm never late for AF and when I'm about to start I have little to no cm at all. Every test I take is negative and there is no sign AF is coming at all. I have a bunch of mild symptoms ranging from occasional nausea and dizzy spells to my boobs growing and being tender. Has anyone gotten a BFP with negative tests a week past AF being due?