Hi MP,
I have to agree with Cheshire. New eyes and ears have a definite way of seeing things differently. I was dx'd with major depressive disorder and it took a reaction to an antidepressant and a stay at the hospital before anyone would belive me about being Bipolar. When I first went to see my pdoc he was able to also dx'd GAD. After years of torment I finally had the answers I had been looking for and some much needed help.
Don't be afraid to ask him questions about the dx's or any of the meds he may put you on. Go in with a written list if you have to. That seems to help me or else I will completely forget what I wanted to ask until the ride home