Waiting for BFP??

What is the longest it took you ladies to get a BFP? I am currently on CD48 and 23DPO. My temp has risen and is constant. It has been this was for 8 days. My missed AF WAS 24th of Dec. I am going to test today but wanted to know and wanted some support. So what's the longest time frame you've had to get your BFP?,