AF 3 days late and still BFN

I am beyond frustrated. DH and I have been actively TTC since I had my IUD removed last May. Since then, not only was I diagnosed with Hashimotos, but I also had a LEEP procedure in August. December was the first time we TTC on every day of my fertile cycle (rather than just "when we felt like it" during my peak days). Anyway, I've been cramping on and off since 1 week before AF was due, and have had absolutely no spotting at all. I've been charting my cycles for 2 years now, and I always have 31-33 day cycles, and today I'm at 36 days. I've had BFN 6 days before AF was due, 1 day before AF, and 2 days past AF expected date. This Schrodinger level of uncertainty is killing me. What do I do?!?