DS is 3.9 - he had a significant delay in interacting/playing with other children - Which was commented on from 2 onwards (by nursery/pre-school etc) - though recently he as actually started to interact with other children and play with them, which I am really pleased about.
He does pretend play - a lot - though he does always have to make it very clear that its pretend.
He is very clear on the rules - e.g. we told him that we don't say "I don't care" - and he makes me not sing that line in a song we do together because "we don't say that, do we mummy"
He can get very upset if people don't follow the rules. (which is not to say he always does what he is told, but once he accepts something as a rule he ALWAYS notices when anyone breaks it, and doesn't like it) - so for example in "go diego, go" he will not (Cannot - as in gets really upset and has to leave the room) watch any episodes with Swiper in them - because swiper is naughty and steals things. - This is a pattern that is repeated with other programs/books etc.
He is unbelievably verbal - several years ahead and good with puzzles, jigsaws etc as well as a very good memory.
He is not terribly physical at all - i.e. he has only JUST started being prepared to try and climb things in soft play.
I am just wondering if we should be worrying about him? (He has an uncle who has aspergers) - or if this is all perfectly normal?