Please don't feel awkward or shy here!
I have the same thing and do have autonomic involvement. The next step will be more testing to see if they can find the cause. For me and for others here, the cause was not found and we are stuck with pain management and are on our own journeys of dietary modifications and self care. Hopefully your cause will be found. Keep us posted and ask any questions and post as much as you want. In the beginning I had so many questions.
You can do searches and read through old posts to learn more. I started a thread a while back for what we have. I'll try to dig it up and revive it so you can read it.