Has anyone felt like they’re not pregnant after conceiving after miscarriage?

I don’t know how to explain it, I have symptoms; tender breasts, nausea, fatigue, etc. But my mind hasn’t accepted the fact that I’m pregnant. I keep taking tests that all very clearly say PREGNANT, but I keep thinking maybe it’s cancer, or something else.

I know that I was trying to get pregnant, so obviously I got what I wanted. But it’s very hard for me to grasp that I really am. Has anyone else felt this way? Could it just be that I’m afraid to lose this one too and don’t want to accept it until I’m sure everything is okay?

(I’m a mental health counselor but sometimes need counseling/advice of my own)