Could you help me out?

Hey there. I'm 16 and I've been told by a therapist that I have GAD (generalized anxiety disorder). I've been living with it for a long time (and phobias and social anxiety) and I've studied it in every way possible and I know it like the back of my hand. What I don't know, is what else I've been living with.

I have symptoms of depression and OCD which are two common mental illnesses to be comorbid with anxiety disorders but I dont know for sure if I have OCD. Obsessive thoughts, yes. Compultions though? Not really. When I have obsessive thoughts I do have a tendency to go online and google things about what I'm obsessing over until I feel better, but would that be compulsions? Any help you can give will be great!