You bring up an great topic and I am glad you posted it!
Health professionals like to organize the problems you experience around some diagnosis so they can address it. Doctors can make mistakes and misdiagnose. For example, I was told by one professional that I have social anxiety disorder. My current therapist doesn't necessarily agree with the diagnosis. Of course, I am not sure who to believe.

KaiGray, if you think the diagnosis is incorrect, you might try to get another opinion.
You could also be feeling a little shocked or denial about the mental disorder diagnosis. I have felt this too. I don't want to believe there is anything wrong with me.
I hope this helps some.