My comment on this is generally that you're the mom. If your gut tells you something is wrong, you should look into it. There is no harm done.
My ds7 is diagnosed Aspegers. He has a really hard time with transitions and gives up very easily when he tries something new and does not see immediate results. I look back at his behavior even as a baby, and I am amazed how these symptoms were there even back then. I could not let him cry himself to sleep, he simply wouldn't, he preferred to go to sleep the way he always had. The volume and length of his crying spells back then definitely mirror his transition issues now.
Good luck with everything.:)
