confused....

Erica • Married💍 Mommy to 3 princesses 👧🏻💖👧🏻💖👶🏼💖
Has anyone ever got a negitive with a HPT and a Blood test and actually turned out to be pregnant???,im on CD 45 still no signs of AF and having all symptoms of pregnancy..could i actually be making myself belive im pregnant and preventing AF from coming????