I would imagine your docs would discuss with you a disease modifying drug for MS.
There are several on the market and they are marketed to slow the MS progression and reduce flare ups. Do some internet searches and get a feel for the old and new treatments so you can discuss them with your doctor.

Start here: http://www.nationalmssociety.org/abo...nts/index.aspx

It took me a long time to get my MS diagnosis! (10 years) But I ended up with multiple lesions on my brain and different symptoms that pointed to MS. There is a criteria to dx M.S.: Multiple lesions on brain or spinal cord. Symptoms separated by time and space (otherwise you had symptoms that came and went at different times). I did not have a spinal tap looking for O bands.