Oh Frank! I find the scariest part of MS is the cognitive damage. This is what I have heard, real dysfunctional demetia is quite rare in MS. Most of the cognitive stuff is just very annoying..............word loss, short term memory loss, a sense of being overwhelmed in certain situations (very noisy, lots of conversation etc), concentration and focus. I also find myself much more irritable and cross. I noticed cognitive junk right away and that scared me to death! However, I am very happy to report that it is not progressing rapidly if at all.
I do take adderall to help with the mental fog and concentration. I have found that if I am more organized and make lists I do better. When I have lost a word, if I picture what I mean, I can find that word faster. This tends to only work with certain words of course.
Ask for a cognitive evaluation if you wish. This is good for a baseline and its helpful for designing cognitive therapy to help with the cognitive issues.
They say keeping your brain active really does help. They also say, doing something outside of what you usually do really challenges. For example; if you consider yourself not a musical person, try learning to play the guitar. I like thinking puzzles. I also love "cup stacking". Google that on youtube. Cup stacking works both sides of your brain. I also taught myself to juggle. I suck at it but I can do it a little.
Michele has given you some good advice too. I hope you can keep your license!!! It seems if you have nearly five minutes of warning then you seem pretty safe! But I don't know anything about that.
Good luck and take care.