Seeking Advice: Could I Be Autistic?

I'm not diagnosed with autism or with being on the spectrum, but I think I may be. My parents don't understand or really believe neurological conditions. If I we're to have it, they would think of it as a barrier. They would see it as something I can grow out of with social experience or pushing myself to exhaustion. I'm seeking a doctor for ADHD evaluation because it runs in my family and my mom's boyfriend who has it is certain I have it like my brother and, possibly, my mother. I was born really early at 7 months and 1 lb so it would be out of the ordinary if something was out of the ordinary with me. My parents are keen on believing I was born with nothing wrong with me and never paid attention to my development from an infant to a teenager. I used to get along better/feel more accepted by my peers on the spectrum or with learning disabilities. I gravitated toward them and we had a lot in common. My curiosity started when my friend Troy suggested I could be autistic but I never really put much thought into it until two years ago. I watched Love On The Spectrum recently and I'm thinking about looking into it because I related to many of the guests with Aspergers and high functioning autism (which I heard is an offensive term). What are any of you guy's experience and struggles with autism (DSM symptoms or otherwise)?