Hi Sheena and welcome to NT!
You came to the right place. Everyone here understands what you're going through right now.
I was dxd. RRMS in 12/01 at age 33 and I remember my first year being the hardest on me mentally. I don't like surprises or the unpredictable and that describes MS. I hated that there was something in life I couldn't control. I had a lot of anger towards this disease and it took me a while to accept.
Allow yourself some time to get your head around this diagnosis and know that it's not really as bad as all those thoughts going through your mind right now. Above all, keep a positive attitude and a sense of humor and know that we're here for you!