Someone help me feel ok

I'm not a worry mom at all but after Posting about my 17 month old only knowing 2 words. Some one suggested that he was autistic and since then I've gone Down a spiral of panics and google searches. I wouldn't care if he was but the thought of not knowing and possibly that he is making me have anxiety and only being able to concentrate on that all day long. My Son has made milestones, walks, runs yes he goes on his tip e toes some days but only once a day does he do this. He's affection it to some people not all, he hates being held, makes eye contact, can problem solve when shown what to do, does still call everything mama, he does ignore me some days but usually when he's watching cartoons, does respond when we tell him to come, kisses his bears, does wave but only does it when he wants, knows how to play soft ball and soccer, tells me when he wants my food, can open doors, knows how to get dog kennels unlocked and climbs up everything. any ways because of google im making my self upset. just need some encouraging words right now because im scared.