20 days late please help.

Brandi
I am now 20 days late on cycle day 53 i haven't tested since i was a week late due to it being bfn. I have never been this late. Avg cycle length is 32 days and longest cycle i have ever had was 35 days. I went to Dr she prescribed me provera which i have already taken and finished days ago and still no cramps or anything. Has this happened to anyone else can anyone explain!?