Good job getting a rfc form! that really helps.
If your own doc is supportive, there is a way to request that the exam be done by your own doc instead of the social security doc, let me know if you want to know more.
Here's a few tips:
The ce exam will probably be very short (like ten or fifteen minutes). they will probably ask you to do things, like pick up a penny, close your eyes and touch your nose, stand on one leg, walk across the room, etc.
If you can do everything with no problems, they will probably write down that you have no impairments or limitations.
If you have good medical records with your own doc, that is the most important. your own doc is a lot more important than what the ce writes.
Most people say to just be yourself so that the records from the ce match the records from your regular doc (like some people show up to a ce in a wheelchair and walk fine to their regular doc... don't do this)
They will write down how you get there, and whether you can drive and whether you need someone to accompany you. They may observe you in the waiting room or parking lot.
if you have a short (one page) medical source statement or a short list with an overview of your condition and medical findings, bring this with you and hand it to the social security doc. He may or may not be willing to look at it. If he does look at it, this could help. Don't hand them a big file, hand them one page. They won't spend the time to go through your medical records, they might be willing to glance at one page if it has all the important info.
That is what I did. I handed them a good one-page letter from my own doc, they read the letter and agreed with it. They didn't bother to really examine me. I used something that my doc had already written many months earlier - it wasn't specially for this appointment.
hope this helps. I understand about feeling nervous. the whole thing will be over really quick, and the ce exams often do not make a big difference for a case.