since you're symptomatic i would con't with a neuro.
i'd also run these sx's by your pcp and neuro so they can follow your progress and keep abreast of your medical care.

not everything is MS related. it's also possible that some lesions don't show up on the MRI right away. and having one with contrast may show up more active disease.

are you on any DMD's? also, you might ask about a PT evaluation. PT might help strengthen your legs. the physical therapists do a great eval and they can bring things to your dr's attention.

don't give up. we're here for you. keep us posted.