This is weird?

Stephanie • 25 year old 💁🏻‍♀️ - Married 💍 - Pregnant with my 1st (Baby Girl Due December 8th💕🌸)

I took a pregnancy test a couple days ago using clear blue digital advance pregnancy test and it came up NOT pregnant. It was about 3 days before missed period. I took a test today mid day using first response and got a positive. I’m trying to figure out the day I conceived. Is the CB digital one just not very accurate then?

By the way, I’ve been TTC for a year. I expected to wake up to my period today. Shocked is a understatement. I’m shaking as I type.