Just my opinion, but the OP does sound more age-appropriate. In one of my parenting class, they talked about using "I love you too much to argue" when dealing with "the sun is shining" sorts of arguments. I'm thinking it's common since the class had a whole section devoted to this.
Â
In regards to curiouscanadian's post, my son sounds somewhat similar to yours. My son always found things to line up and make trains, he couldn't stand the feel of certain fabrics on his skin, and for a long time, I had to take the blender to my bedroom to run it because the sound was so upsetting to him, and vacuuming... yeah...
 He also repeated everything. In fact, he never originated speech, but could use phrases he'd heard elsewhere appropriately to communicate. It's called Echolalia. My son is affectionate, sweet, and bright. And he is also on the high functioning end of the autism spectrum.Â
Â
We've come a long way since the train-making, echo-filled days. He wore jeans yesterday, which he started tolerating about a month ago. He's now in charge of turning off my VitaMix and he's fine with vacuuming. His echolalia returns every once in a while, but really he is almost conversational. Not quite, but getting there. He receives therapies, with much focus on processing issues. We follow a special diet (gluten-free/casein-free for now, GAPS diet soon) and noticed huge improvements about 5 months into the diet.
Â
Either way, I always suggest contacting Early Intervention (or its equivalent) any time there are concerns. The earlier you can recognize the issues, the earlier you can start working on them! Good luck to you both!