I am in the exact same boat: 10 days late, lots of tests and all BFN. This is just my first cycle off BCP so that may be it but I have been having weird cramps as well, not quite AF cramps but it feels like more internal or something and I have been eating and drinking like a horse the past couple weeks as well as peeing alot more. I am going to call my dr. tomorrow probably and see what they say.
It's possible you are still pregnant.
Make your own Blinkie