Is my 3 year old autistic?

My son will turn three next month and while I have always felt he was a bit different, lately things have been more noticeable. Here are some behaviors I have noticed:

Aversion to certain clothing Picky eating Hand flapping when running Sometimes he covers his ears when I run the blender and on occasion he will scream His tantrums can be incredibly intense and last upwards of 30min He has begun to line up his toys more and more He is incredibly active and needs almost constant rough play or crashing He can be aggressive and has a hard time controlling his body He gets incredibly fixated on a topic for long periods of time We repeat the same games again and again with the same story lines He seems to have anxiety and needs my constant attention

There may be some other things that I forgot or just haven’t noticed. It is also important to not that he did not speak until he was 2 and never babbled. I am truly unsure how to handle some of his behavior and while I know all children are different, parenting him is nothing at all like parenting his younger brother. I have read and re read most of the early diagnosis literature and now I am coming here because there are just too many things that may or may not be indicative of ASD.

Please feel free to ask any clarifying questions.

Thank you all so much in advance.