Difficult to process ASD signs in my 20 month old baby

Hi all, my daughter is showing symptoms which is matching with ASD.

Not responding to her name but to other sounds.

Hand leading but not pointing fingers to show something.

Minimal eye contact with very less expression. 

No playing with other kids and just trying to collect things from ground like pebbles, leaves or seeds. 

  • Sometimes hitting her head when angry.

  As a parent it’ is really hard for me to understand and accept this for my daughter. My wife is still in denial mode and waiting for official confirmation.