AF is 12 days late and still BFN!!

Amanda
I have never been more than 2 days late and this month I'm 12 so far!!! But gettin BFN on my tests. I'm out of town now but plan on going to doc when I get back Monday. This is driving me nuts. Anyone get negatives for a long time before a BFP? I don't have any hope left really, but just wondering!