Like you, I'm on the trying get a diagnosis path right now. Just a little bit ahead of you. The process is not quick, and it is stressful to go through it not knowing what is wrong exactly.

The advice to keep a symptom history list was incredibly helpful to me before my first neuro appointment. It really helped. My first draft was long and emotional. Then on advice from people here, I cleaned it up. Made it shorter and concise and removed the emotion from it (as much as possible). It felt good when the neuro read through it and added all kinds of things from it to his notes.

Panicking and worrying may not helpful, but they are NORMAL. I have been going through it big time. Don't let the panic and worry rule your life, but know that it is normal for something shocking of this magnitude. Try to stay calm, but don't beat yourself up because you're freaking out.