What is the latest cycle day you have ever waited for a bfp?

Tasha

I doubt I'm pregnant but I've had every symptom there is. I had blood work done last week but it was negative. I'm currently on cycle day 42 af was due on 11/2 but never showed. Had spotting 10/26-10/29 but this is the first time in years I have been late. So my question is what was the latest cycle day you have ever gotten a bfp?