So, usual cycle of 28 days has been 24 days for about 3 months now. Currently day 28, so expected it 4 days ago but it's not neccesary late iyswim. It would usually arrive first thing. 2 tests (I know, I know), 2 bfns. Some brown discharge when I wipe. Should I be preparing for AF? I'd appreciate any experiences of this please...! Just want to be prepared.