Dx Autisic Disorder

I posted awhile back about my son's possible PDD dx and what that means with the new DSM.  Well, I have spoke to the Dr. and received the ADOS results.  His dx is Autisic Disorder.  She explain over the phone and in the report that his dx is under the old DSM and they are in the process of switching to the new and at that time his dx will be ASD.  We have talked to the local ABA clinic and our insurance will cover it and since he had two surgeries last month (tubes in his ears and one in his tear duct) we have met our deductible, which is pretty high.  So, that is good news.  We got the ADOS report a couple days ago and I am having a much harder time then I thought I would.  I guess just seeing it in writing.  I have always thought very positive about DS's future, but now I keep thinking of the what ifs....like what if I can never have a conservation with my son...ect.