Are you with a health management plan? If so if you have the energy and werewithal you should find a way to complain. (This is really unacceptable behavior; complaining may have your health management plan send you to someone who does know about FM). Besides knowing that fibromyalgia means fiberous muscle tissue pain your neurologist also surely knows many other illnesses which were named incorrectly before technology determined their cause. What a cheap way to put a patient down.
While many physicians are ignorant about FM more and more know are learning about it. You might try the National Fibromyalgia Association for a list of knowledgeable doctors or FM support groups in your area that could guide you in your search. You may or may not have FM but you'll never find out by going to someone who doesn't believe it exists.
http://www.fmaware.org/site/PageServer
Keep going - take some relief from the fact that you're not alone. This has happened many times to people all over the country.
Good luck.