Hi tiny mom
How old is your son? He sounds like he has some of the flags, but on the other hand, the fact that he turns around to see your reaction is a good sign. He wants to see what you are going to do, or what you are thinking. Usually in very young children with autism, this is absent. My son is 5 now, and he JUST
started to see my reaction when he is doing something wrong. He never did as a 2-4 year old.
I say, get him looked at by a developmental pediatrician or neurologist, just to make sure. It couldn't hurt, and if he winds up being on the autism spectrum, the sooner you know, the better.
Best of luck, and keep us posted