Is It Autism?

My child was diagnosed with PDD-NOS. He doesnt say any words yet, yet he makes vowel and consanant sounds. He pulls me by my hand to what it is he wants. He has very poor eye contact, at times avoiding me yet he will laugh if were playing peek-a boo or im chasing him, He'll go hysterical if I say "im gonna get you" and chase him. Hell look me in the eyes at times for a good minuite or two if Im singing a song he likes. He has to touch EVERYTHING it takes us a half an hour to walk around the block because he shuffles his feet in the dirt and stops to touch something every 2 seconds, He has a huge attachment to his blanket and falls asleep always with the tag in his hand, but he doesnt scream if I take it away. He was a late walker, and solid food eater. He doesnt seem interested in playing with other kids although hell laugh at them if they run by or kick a ball, He likes to be hugged and held and cuddled...does anyone else have a child with similar traits to mine??