Hi samarkov,
I'm wondering if you're simply clinging to a label because you feel different. Here's the thing: everyone's different. It seems to me that you're trying to attach yourself to a group of people that share personality traits as opposed to interests. I can certainly understand the need to belong...but there are so many better ways to fill that need!
And you don't automatically get locked up for schizophrenia. For example, I dated a brilliant, sexy chemist for a while. We broke up over religious differences. And yes, he was officially diagnosed with schizophrenia, yet he still managed to have a successful career and life.
The truth is that we're all different. And mental health issues are on a grayscale, not black and white. A diagnosis is just one name for a cluster of symptoms that are more prominent in some people than in others. Whatever happened to just being
people?
I'm not dismissing the possibility that you might have SPD, but I think that structuring your life and your outlook around a diagnosis you're not even sure you have might actually hurt you rather than help you.
Just my 2 copper. You're not obligated to like it.

--Frayed
Do not take my advice before talking to your doctor/counselor/other professional. Depending on where you live, you may be able to find free, confidential care. Most importantly, sometimes your shrink can be wrong. Get a second opinion.