My first Paed appt was last week too.
She spoke to him and asked him if he knew which school he went to and who his best friend was. He answered these - he doesn't have a best friend but he thinks that the boy who sits next to him is - without any eye contact at all. Not like he was shy as he gave very clear answers, he just didn't look at her.
Like Brandy77, the paed gave him some paper to do "coloring" while we were talking but at the end of the appt she said that she would keep them. His pictures are definitely immature! He had some lego to play with while we were talking and he just built towers as usual.
My paed didn't have a form to complete, it was like a informal chat (but clearly every question was very carefully worded).
If you have one of the baby books where you are meant to complete when did your child first pick up a spoon, babble etc. Take that with you. She asked loads of questions about him at birth, re feeding, pointing, babbling, playing etc. Some of them we didn't really know the answer to as DS is now nearly 6 and I just seem to have blocked out a lot of his toddler years
.
We also left with a "DS is very likely to be on the spectrum" which given that I answered all of the questions with answers that I knew were a pointer towards ASD wasn't surprising. She said that his lack of eye contact right at the start made her immediately think he did have it.
We have to have a multi discliplinary assessment which I think that Brandy's DS has already had but she was still willing to speak and write to the school to let them know how to deal with him in the meantime.
Unfortunately I am on meds so I can't do
otherwise there wouldn't have been anything left in the bottle that evening 
I actually emailed a list of the concerns over to the Paed's secretary prior to the appt so that she had everything that I could think of in advance as I always go a bit blank in appts.
Good luck!