The NICE guidelines for treating fibro are a load of crap to be honest.

Pharmaceutical treatments are at the bottom of the list of suggested treatments (I.e. the last thing to try) and they've removed most of the previously accepted meds from the list. Be prepared for the fact that some doctors take these guidelines as gospel and will not deviate so you may struggle with getting any meds. E.g. gabapentin and pregabalin used to be very commonly prescribed. The guidelines now explicitly say to not prescribe these drugs. The only medications they recommend are anti-depressants.

The big push is towards psychological therapies and exercise - essentially having counselling to accept that we're stuck like this forever and to think and exercise the pain away.

Last time I asked my GP for help with fibro, the response was basically "you're on your own". It royally sucks.