Excellent that Doc was able to DX your MS from the MRI. So often that doesn't happen. Glad the active lesions screamed at him/her this time.
Welcome to the club, of which noone wants to be a member. We are here to support you and you for us.
Taking a DMD is a choice made by you after discussing the different options with your Doc and an online investigation of said drugs. Copaxone may be a good choice for you. They all have about the same 30% chance of efficacy for you.
Stay with us and good wishes for you.