@Fuss I have joint hypermobility syndrome too. you need a referral to rheumatology, who then need to refer you on to hydrotherapy, physiotherapy, and occupational therapy, and if things are still bad after that, the pain management team. All did wonders for me (though I didn't end up needing the pain management program after my referral), and I'm loads better now. I'd ask for different meds if I were you, too - I was on gabapentin with oramorph for when the pain was extreme.
I did also have fibromyalgia alongside it (though Im not sure about that, but that's what I was diagnosed with). I went from working full time in a promising career to bedbound in my early 20s. I was using a walking stick, and I developed chronic fatigue too. My partner had to lift me in and out of the bath (I couldn't stand safely to shower), do everything for me basically, even some days would have to carry me to the toilet. Immediate extreme disability like that was terrifying. It happened virtually overnight, too.
I was lucky though, it went as quickly as it came and only lasted a few years (which is why I doubt my diagnosis), though my hypermobility still causes problems, but I'm physically independent again. The damage done to my life as a whole has still not been repaired. I'm still on disability benefits and can't find a job that I'm confident won't make me ill again. My partner's career was ruined too because he had to be my full time carer. I'm now massively overweight and can't shift it. I struggle socially (I did anyway, but more now) because of the years I've spent home only seeing a few people.
I'm now struggling with nice new problems! Possible PCOS, can't get a referral because of covid, recovering mentally from a traumatic termination from over a year ago, and it's only recently dawned on me how bad my stammer is and I don't know how it was never picked up on before. I don't know if I've always had it or if it started spontaneously as a teenager. Been TTC for nearly a year and having to watch my sister go through pregnancy when it should be my turn, she fell first go, but no one knows we're TTC, which I think makes it harder. I didn't expect any of this to happen. It's nice to be able to write it all out