He is more than likely absolutely normal and fine and just a little slow to get going. BUT as others have said, the list for a speechie is long and with you working in special needs you probably know that all too well, so it wouldn't hurt to at least get him on the waiting list for a speechie now, but if he doesn't need it by the time you get in to see them, you just cancel. Also considering your family history, it certainly wont hurt to have an assessment done and at least have that confirmation from them that he's fine.