I was diagnosed FMS, and CFS 1 year ago. My rhuemy sent me to a pain specialist because of her concern of narcotics. This pain doc gave me my 3 vicodins a day and 2 somas a day as long as I prove that I am enrolled in a water therapy class. But, now in May he want to start a series if nerve blocks. Has anyone had them? what exactly are they? how do they make you feel and for how long? I am a little nervous.