Paediatrician told us DS2 has a partial diagnosis today. ADHD & DCD - (which for some weird reason they use an acronym of DAMP - which I find horrible!!) He also has sensory problems and extreme social communication problems. Still grey on the ASD aspect of it. He was a tornado in the paed's office. She has suggested ritalin again... we're just not happy with it, due partly to his age (5yrs), and partly due to the fact that he's already on other meds for eczema and asthma. We've told her at present we are not comfortable going to medication, but will be open-minded about it and revisit it as he gets a bit older (and more difficult to control physically). She also felt that the school may suggest he go into a special school as of year 3 (when he would normally go to the next school after his present infant school).
She's also looking into finding some sort of support for DH in the form of counselling, as he is having serious coping problems and cannot deal with DS2. She mentioned "respite" a couple times today, but honestly if we can get counselling for DH, that's our biggest stress right now. We have "respite" in the form of full time school. Now if we were homeschooling, that would be another issue entirely! 
Not sure how I feel about getting a diagnosis, to be honest. I'm actually not horribly upset over it, as it's pretty obvious about the ADHD & DCD for him, so I was fully expecting it. It doesn't really CHANGE anything. And they still have other problems they need to address as well, so while DH is in a bit of a tailspin over it, I'm actually not feeling much different. (although tired from the long day)