Hey there...
I work with people with developmental disabilities daily. I have been through extensive Autism training. I wouldn't worry so much about Autism right now. Prominent effects of Autism become apparent around 2. One of the biggest signs is loss of words and aloofness. Doesn't sound like that is happening. People are often very quick to ask if its Autism because the diagnosis of Autism is on the rise (1 in every 150 - WOW!) However, you know your child better than anyone and if you feel they need to be tested I would recommend that. Early intervention is vital. Good luck, let me know if I can help anymore!

Choose Love,
Angel