Hello fizzyrox and welcome to NeuroTalk.
There is a diagnostic Criteria for Multiple Sclerosis (The McDonald Criteria).
http://www.nationalmssociety.org/Sym.../Diagnosing-MS
http://www.nationalmssociety.org/Sym...ns-to-Rule-Out
You may want to read the impression section of the MRI report as that will usually give some indication of findings, but is not a diagnosis. Unfortunately, non-specific could mean just about anything

and is a very general term.
In the diagnostic process Drs. look for "signs" of what may be the cause of a patient's symptoms. Signs include Neurological exam and testing. Symptoms are those things that we, as patients experience. Right now it's doesn't sound like you have enough "signs" to support a diagnosis of Multiple Sclerosis.