11 dpi test bfn ??

Dana
Tested again tonight and it was a Bfn! I am super emotional - crying out of no where and boobs hurt here and there or are tender. Earlier I was focused at work and then happy singing on the car ride home full of energy then had dinner, watched tv and got emotional too. Is this a sign of af coming?! I'm due for her on the 1/23/17 roughly! Ugh! Or is this possible? The tww is torcher. Oh and I have a slight headache now and lower back pain/cramps. 
Thoughts? We used preseed first time. Hoping hoping it worked!