Good news. I don't have MS.
The neuro I saw was a MS specialist, and he said that every problem I'm having is a combined result of a car accident (my concussion must have been a lot worse than originally thought) and the ridiculous amount of stress I've been through in the last year. (The car accident happened in March of last year - I went around a blind curve and a lady was sitting in the left hand lane, and I plowed into her. I had whiplash and a concussion.)
He put me on an anti-anxiety medication, and has asked me to do research on removing about every stressor I've got. There's not much to be done about the concussion.
Thank you all for listening to me gripe and wig out, and thank you for all your well-wishes.