welcome to NT, glad you found us.
it does sound reasonable that your neuro wouldn't think MS. but a 2nd opinion is a good idea.

some drs can hook into radiology images on their office computers so the dr may not have had to have the CD in her hands.

start to get copies of your dr dictations and reports. 1 to read for yourself and 2 to keep a medical file on yourself. if and when you see other drs they may want to review these things.

i also think seeing a rheumatologist is a good idea. but if the dr dismisses you i'd find another. you must have a dr that is willing to listen and validate. what does your pcp think?

please keep us posted and keep in touch.