Welcome. There are many, many options for you with this group. If you are concerned your child will just be 'diagnosed' with some problem, check out CCHR (Citizens Commisssion on Human Rights), as they can assist you. If your child IS labelled, you can be in for a rough time with suggestions for drugs, etc. CCHR can help.
Come to a park day soon, as it would be good for you to see how other kids are doing, how they interact, etc. And, if you need a new pediatrician, I am sure many of the moms have a good one who might not be so worried.