Hi coffeegirl and welcome to NeuroTalk! I totally understand your anxious feelings. I had to have an MRI before I was given my dx of MS and the waiting is not easy. But...it did help to know what was wrong.
I know this is easier said than done but try not to worry too much about what the MRI will uncover. Worrying over it will not change the outcome but just make you more anxious in the meantime. Your list of sx was very familiar to me...I've had them all except for the migraines.
Please don't apologize for venting or even having a pity party....we have lots of those around here!

At least we all understand what the other is going through and can relate. It's so hard trying to talk to people who just don't "get it".
Please keep us informed on the outcome of your MRI and what the Neuro has to say about it. And feel free to ask any questions you have. Someone here will most likely be able to answer you. Glad you decided to join us here!