Welcome to NT...sounds as if your docs are on top of things test-wise. Good to see that they checked for Lyme, since it can mimic MS symptoms.
Also glad to see you're keeping track of your tests. Make sure to keep a symptom journal too with dates of onset. Also a list of ? for your neuro appt.
Most of all, try your best to live life in spite of the challenges. It's so frustrating when you don't know WHY these symptoms are occurring; but try to make lemonade out of the lemons you've been given.
I hope you get an answer soon so you know what you're dealing with!! I was so relieved to finally get an answer...and then reality set in
Keep us updated please...this is a great place with great advice and support...