No autism is something that you are born with, genetically inherit. No one person with autism will be exactly alike as another and also can have this diagnosis along with several others also, so everyone is unique. It is likely that mild autism can be overlooked in children, especially in the past where testing was much more inferior, so several adults are finding themselves finally diagnosed after a troubled childhood. Most find the diagnosis enlightening as they find a reason for their past and present circumstances. Behavioural traits will be different from one person to another but most would have some social problems and / or anxieties. (Of course that does not mean you have autism ... there is far more to it than that). Would be best to speak with your doctor on the subject, who at your insistence, can send you for thorough professional testing. Whatever the result just remember diagnosis won't change who you are at all, but may help you to find answers and assistance.