Self-diagnosis is valid. If you feel alright in your current environment, but think that autism might explain some of your experiences, then I would not prioritize getting a real diagnosis.

Learn about autism and how it affects you specifically. Autism is not just a linear spectrum from "low functioning, infantile autism" to "high functioning, Asperges" as some stereotypical explanations would put it. Learning about autism in general helps, but what matters most is learning what it means to you: What you can do without getting drained, what you shouldn't do, what kind of support that would help you.

As part of this journey you might realize something your parents does unknowingly to support you (or worse hinder you) or realize why you drifted apart from former friends. Some of this might be hard to accept, other things might be light-bulb moments, where things suddenly makes sense. Take your time.

At some point a diagnosis might be useful. Either to get the support you need from a bureaucracy or to get acceptance from your surroundings. But as long as you are alright, I would have a specific goal before seeking a diagnosis.

"If you are alright ...", I've said this twice. If you are experiencing stress (and not just the "I so busy..." kind), depression, or other mental issues then I would seek an evaluation for your autism. Treating mental issues as an otherwise neurotypical might do you more harm than good.

And finally, make sure you have a space where you can be you.