Well first, what is "normal" anyway? I agree with what your therapist said, like mixedup emotions I've also been told that thinking of bad scenarios is pretty common.

How well does your pdoc know you, compared to your t? I just wonder if your t has a better understanding of your history and behavior and thoughts and is able to see the big picture better. Labels like weird, normal, don't help. You are you, you are talking about this with T and that is what matters. I also hope you choose not to get so hard on yourself about it.