I am so sorry you're going through this. I also have MS.
The best advice I can give you is to get on a disease modifying drug (often referred to as a DMD) ASAP. This is really important because they slow progression of the disease and the sooner you get on one the better your prognosis will be.
Yes, there are 4 types of MS. Relapse/Remitting (RRMS), Primary Progressive, Secondary Progressive, and Progressive Relapsing. The majority of people start off RRMS (which is what I still am, too). In fact, that is another reason the DMD's are so important, to keep people from turning from RRMS to Secondary Progressive.
May I ask, did you have both an MRI and a spinal tap to be diagnosed?