Didn't get a BFP till 2 days after missed AF

My AF was due on the Saturday the 31st, I tested that morning with a blue dye test and it was negative. I waited till Monday the 2nd to test again, and got a positive on a digital test. The next day I took a regular one and got a faint, but obvious, positive. And I took another one 2 days later and the faint line showed up almost immediately and was a little darker...I went to the doctor yesterday and they got a positive result as well.

..my question is: Is it a bad sign that I didn't get a BFP on the day of my missed period?

Sincerely,

Super Nervous.