My DD1 who is 5 has just been diagnosed with high functioning autism.... I WISH someone had taken my concerns seriously when she was 16 months... instead I was told again and again that I wasn't a good parent and that I was doing things wrong. It won't hurt to get the assessments done so that you have it done now. Things may change in 4 months, or they may not... its worth getting the all clear now . I spent the past two years searching for answers, and now we finally have a diagnosis, we are on an 8 month waiting list for early intervention which cuts off when she turns 6.... so we'll get a month of early intervention before the funding leaves us.