It is definitely normal to feel alone and lost; especially when first diagnosed. For me, it felt easier to deal with as time went on and I made my peace with the fact that I do have MS. I was grieving prematurely for what seemed like a loss of my self-worth and manhood more than anything else. Eventually I had to get on with life, I started attending my classes, going to work and working out harder than when I was "healthy".
I am not sure if anything that I am doing works, it just seems like the best bet in the absence of concrete proof. I read Roy Swank's book and then found George Jelinek's "Overcoming Multiple Sclerosis", both of which offered a bit of hope in a very, very dark time.
My suggestion is feel like shit if you must. Cry, get angry or sulk but just keep something in the back of your mind : None of it is that important. We all end up dead anyway. So I refuse to (or try to, on most days) accept anything less than what I was doing before I was diagnosed to the point of over-doing it sometimes; thus far, I have been largely spared with the exception of a few very mild attacks. It is not in my nature to be optimistic, but I'm learning.
P.S My father had MS, my cousins have MS and I am certain that not even my mother understands this disease. She is loving, caring and supportive but she just does not understand it and if I have my way, she will never have to.