JIA and Fibromyalgia: Anyone Else Experience Pain in Other Joints?

Hi I was diagnosed at four then went into remmison at age 8 then rediagnosed at 13 Bc of puberty but when it came back the second time it was better but the pain was worse and I would get pain in all my other joints of my body, I was told it was my JIA coming back but others said it was fibermialga (sorry I can’t spell) but I’m just wondering if anyone else experienced this or knows why I did?? I also got a steroid shot at age 13 two months after a rediagnosed and that’s been helping ( I’m not actually 18 I just want to learn more about different experiences with my condition ) (im 13 about to be 14)