I'm 13 DPO and no AF (2 days late) and no BFPs ....not even a faint one. One came up on a Superdrug one 3 days ago but really, really faint. Now I've tried about 5 more and nada....confusing....shall I give up testing, stock up on the tampons and call it a month? At 13DPO there should be at least something, no?