You have just described repetitive obsessions, anxiety, noise sensitivities, and not knowing how to talk to people. Based on this information I would seriously look into Autism. Your life is going ok now and hopefully it stays that way but if it turns for the worse and you need services or therapy it would be better at least to have an understanding of what is going on with you and better yet if possible have a diagnosis (Autism or not) then to first start searching.
Diagnostic Criteria for Autism Spectrum Disorder
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Persistent deficits in social communication and social interaction across multiple contexts, as manifested by the following, currently or by history
Deficits in social-emotional reciprocity, ranging, for example, from abnormal social approach and failure of normal back-and-forth conversation; to reduced sharing of interests, emotions, or affect; to failure to initiate or respond to social interactions.
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Highly restricted, fixated interests that are abnormal in intensity or focus
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Hyper- or hyporeactivity to sensory input
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Professionally Identified and joined WP August 26, 2013
DSM 5: Autism Spectrum Disorder, DSM IV: Aspergers Moderate Severity
“My autism is not a superpower. It also isn’t some kind of god-forsaken, endless fountain of suffering inflicted on my family. It’s just part of who I am as a person”. - Sara Luterman