I'm not a disability lawer and can't give you direct advice, but here are a few things for starters.
first is would be very helpful for you to have a diagnosis of fibro from an MD. you will eventually need this. second, you need to find a lawyer in your area who specializes in disability. If you are in the U.S., each state has a Bar association, find the number and call the association, they can help guide you to a list of local lawyers who specialize. also there is a web site www.martindale.com, where you can search by geographic and specialty areas... use it to find someone in your area.