I would hold off on testing. Only my thought and the way I feel is if I get a negative I'd just be expecting af. Rather think of the what if and be positive. But that's just me.
We are ttc for first one. I went off birth control in October 2011. Cycles did not regulate and we stopped treating early 2012 because of my new job. But started try again last month. Deff feels like cramps that af is coming. But not due for her to come for another 10 days. Usually I get cramps 12 or less hours before she comes.