Ok, DS is 2.6. He's lovely, lively, funny, is average at talking and sleeps well. He was a little bit late at sitting/crawling/walking but all within 'normal'.
I just have a gut feeling that I can't shake. I've had it since around 12 months but it's really hard to describe why without sounding like your average PFB'er. (Which I freely admit I am!) I've looked at the mchat test but it's difficult to put the way he is into yes/no tick boxes iyswim.
He doesn't like people; adults or children makes no difference. He finds himself a safe place, usually behind a sofa or in a corner, and watches. Then comes out slowly when he's ready. He's ok once he gets to know them but even after a couple of hours I can't leave the room even for a minute. He's fine with close family though.
He's brilliant at independent play, happily amuses himself for most of the day. He plays 'pretend' but it's acting out scenes from cartoons he's watched rather than abstract imagination.
His favourite toys are his Alphablocks and his numbers. He will play with other things but the letters/numbers are always involved. In all honesty I don't think he'd care if I got rid of everything else. He spends his time lining things up and arranging them in order.
He spells out short words but these are ones he's seen on Alphablocks episodes so not 'spelling' as such. Usually 3, 4 or 5 letters but he also spells out 'alphablocks' and 'alphabet'. He has some flash cards and can sound out most 3 and 4 letter words. Once he's laid his things out he gets very upset if you move them or if they fall over. Very upset.
He flaps his hands when he's excited. This can be for any reason, a song, a cartoon, reading a story or just whilst he's playing.
Bloody hell, that's already an essay 
there's more, but if anyone can be arsed getting through that lot for now I'd be more than grateful!