Going crazy-need help

Ok, this is month 3 off BC. My first tracked cycle was 23days. So, I was expecting to have AF Tuesday. I tested BFN Sunday. It's Wednesday, no AF. I assume my cycle is still regulating, so I don't want to get my hopes up since I'm "2 days late". But since I got BFN Sunday am I out for this month? The timing and all of this is just over my head at times. I'm trying to figure it all out so any help is appreciated! My plan is to wait until after day 28 to test if I still don't have AF. Thoughts?