How late did you get your BFP?

19 dpo and I haven't got a good positive yet. I can see a maybe line on FRER but now my husband won't let me buy any more tests -_- 
My period is 6 days late today and my temp is going up! Higher than when I ovulated! I'm pretty confused. I don't even have cramps. I always get cramps at 8 dpo that are really faint and last until my period (at 13 dpo) I also keep getting possitive OPKs 
So what I want to know is how late have you  gotten your BFP