Update: I had my 2nd MRI yesterday.
Today, the neurology department called me and said that my MRI was "unremarkable"- so that's good.... But the "mystery that is me" continues.
Next, my neurologist wants (and I do too!) me to see a neuro-ophthalmologist at his hospital because of my vision issues that have been here since Feb, and seem to be manifesting new symptoms- but I don't know when appt will be scheduled.
If nothing "remarkable" is discovered from the neuro eye exam, then I get another spinal tap. And at the end of this month I still have a brain EEG that is already scheduled.
So Neurology doc is still looking, but finding no reason for me to be feeling as poorly as I am or to be having the problems I am.
As glad I am that the brain MRI was "unremarkable", I'm also struggling as it again prolongs the unknown. So, I have very mixed emotions today.... I'm glad, but am also frustrated at another test with nothing "helpful" (please understand I'm grateful there wasn't something awful) and frustrated at the continuation of the "mystery that is me" and having to schedule more tests.
I just (like most everyone here, probably) want to feel better and get my life back!

Sorry.... it's been a rough day.....