Best wishes, Oldsoul...
I would only add this suggestion; try and relax. Yes, it will be an information gathering, however it won't be an interrogation. The pdoc is there to help you get a good start and not to put roadblocks in your way.
Possum was spot on about your feelings after the appt. It is a two way street so to speak...you have to feel you can trust this person to help you. Sometimes it takes one or two appts before you'll know so keep your options open.
And, yes, please be honest. It's the only way the pdoc can do a good assessment...perhaps thinking of it as a team effort would help?

In Peace