I think your first port of call should be your doctor , from there they can refer you to someone qualified to diagnose you - like a mental health nurse who will go through your symptoms and ask you questions. They will be able to determine what happens next , whether that be therapies , counselling , medication etc.....
I know how you are feeling , don't let yourself suffer needlessly , go make that appointment.
Take care ,
DX : Bipolar , Panic Disorder , GAD , OCD , IBS.