i couldn't have said it better than natalie.
besides credentials, drs should listen, look, examine and validate.
you knew in your gut she wasn't right so listen to that little voice.

and, good for your dh. it's good to take someone with you to appts for a 2nd set of ears. start to keep a sx (symptom) journal with dates. it might help the next dr. and, get copies of your mri's & reports to take with you. was your mri with & without contrast?

sometimes with dx'ing MS you might have to wait several months to repeat the mri's to check for changes. there is something called the McDonald Criteria that drs refer to when dx'ing MS. you might look for it and check it out.

your pcp sounds like a gem. please let us know how things are going.