One week+ late, but BFN

Amanda
Anyone have BFN the day AF was due, then go on to get BFP? DH and I are ttc, but last month was our first go after I stopped the pill. I'm 9 days late and my last BFN was 3 days past expected AF. I haven't tested since then. Thinking this is just post-pill amenorrhea, but I'm getting antsy.