ok so lately I have noticed that my ds likes to line up his toys in a nice neat line.

This morning I took him to the pool, some kids had some water pistols there and my ds was more interested in lining them up rather than playing with them I kept trying to encourage him to come swim with me but he stayed with the water pistols. once the kids left with the water guns, he was happy to come swim with me.

Sometimes when he plays with his cars, he lines them all up in a neat row.

Is this something to be worried about or is this normal behaviour??

I am not sure why, but ever since he was born i have been paranoid about him having some sort of sensory disorder like aspergers or something and it is one of the reasons why I didn't get him immunised for the MMR.

should i seek help or not? His dr (who has an autistic son) told me, when i asked her about the immunisations, that my ds is not autistic and he plays normally etc when we are in the dr office, but i'm still worried cause sometimes he seems very distracted by one thing and when I call his name while he is distracted he will not even acknowlege me calling out to him.

what should I do??