I was relieved when I got my MS dx last Nov. I'd been dealing with sxs for at least 4 yrs., and felt as if I was insane with all of the unexplained sxs. Having an answer gave me solace.
But I must admit that when the first shipment of Copaxone arrived, I cried like a baby. It made the dx so real...and I felt so scared about the future.
The injections sting at first, and itch for a few days at each sight. I learned from my NT buds to heat the area for 5 minutes before injecting, pushing the site with a cottonball afterwards, and icing it afterwards. I used hydrocortisone cream for the itchiness.
Now, after a few months, the site doesn't itch anymore, and the discomfort isn't long-lasting at all.
Good luck, and know that there's lots of support and information here!!