Hi lin888.
Look into cannabis with a higher component of CBD (the more calming and and soothing chemical in it ) and lower THC (which is mainly responsible for the "high" effects).
Recently cannabis producers have been breeding more of the higher CBD
varieties of cannabis, as these are holding greater promise for safer and more efficient medicinal treatments.
Also do a search here for an older thread I started a while back for other natural remedies recommended for fibro , under "IWILLDOTHIS".
Hope this helps.
Best wishes!
Niko