Just about any kind of weirdo symptom could be MS, I think. But it could probably be a bunch of other stuff too. You'll have to actually go through the tests.
Good luck moving up the MRI. However, if it's MS, the short wait for the MRI won't hurt you.
Stess can make an MS situation worse though. So, personally, I would probably focus on that part while you jump through medical hoops to find out what's happening. Try to relax and to focus on being grateful for all the blessings in your life (beautiful kids, the opportunity to go to grad school, etc.). And, even though it's a little weird to my mind, there's evidence that spending some time thinking about a person who is much worse off than you (a political prisoner being tortured, a poverty-stricken mother watching her children starve) helps you to build compassion for others and to feel a lot better about your own lot in life. If you're having a hard time finding a happy place, you might give it a try.