To answer one of your questions: When you have not had a firm diagnosis (aka: Limbo) you can't accept what it is, because there is yet to be a lable. If you ever get the dx, than I think the process to accepting can begin in a healthy way. (But could still take years based off of what others here have said)
I was in your shoes last winter, I was convinced I had MS. Now that the testing is over and I am left in a 'possible MS' state of being....my way of handleing it now is to wait it out and not worry about it. I'm hopeful I won't have any more flairs....but if history has an eye for my future....I should have a flair in about 3 years.
In the meantime, I've pulled myself out of the drama, the obsession and the depression. Survival instincts have come out...BUT...my sx have gone away and pretty much the normal me is back....when the flairs are going on, it's impossible to ignore though....
One other thing....I got those same responses from some family and friends too...(I'm tired too, I forget things too, Sometimes I get tingly, My eyes get tired) When people minimize your sx it's enough to make you feel crazy (I went to a Phyciatrist to make sure I was not crazy).....
Fortunately for me my DH was never one of the ones to minimize me and did all he could to comfort me....just keep the lines of communication open there! In your post you said you thought of divorce...then later said he was a "Good Man"....that speaks volumes
Just hang in there....and can't wait to hear how the LP went!!