Not sure if this is the correct place to ask this question... anyway, over the spring/summer I was in the hospital a bunch, had a ton of tests, have obvious issues on some test results... the hospital recommended I see a cardiologist, so I have been to one a few times, and have been to a regular GP.

Being a complex case, the local hospital did what was minimum required, and sent me home each time with little help or information on what is going on.
So the only other doctors I have seen are the recommended cardiologist and the GP. The cardiologist somewhat diagnosed me with autonomic dysfunction. While he explained what was going on in the cardiology part, he seems hesitant to use actual labels. I didn't tolerate medication, so treatment consists of just not doing the stuff that causes me problems. The GP has helped with some of the minor issues, and I like these two doctors, but I understand that I have probably reached the limit of what these doctors can help me with.
This leads to my question, what do I do next???? What type of doctor do I see???