Welcome! It's not strictly true that only a doctor can tell you for sure. Many autistic people (autism being an umbrella term which incorporates Asperger's) - especially those who learn about autism as adults - decide never to get a formal diagnosis. But that is your choice.
Obviously I can't tell you whether I think you're autistic or not, but it sounds like you have some valid reasons for thinking about it.
A couple of things you might find helpful to think about, if you're trying to work things out:
- What were you like as a young child? Autistic traits tend to be more obvious in early-mid childhood, and as people get older they can learn to hide or disguise traits.
- There are a few different things which might have similar traits to autism. They can all co-occur with autism, but can also occur alone. The most common ones I can think of: social anxiety, depression, sensory processing disorder, dyspraxia.
If you have any other questions or anything, feel free to quote me or PM me if you prefer. Autism is my major obsession so I'm
always happy to talk about it.