Since 2005 my ANA titre is 1:5147; docs can’t find which disease

It’s been 19 years and docs still cannot determine what disease is causing this. I have lots of pain in various joints and muscles, plus extreme fatigue. My CRP and SED rate are always high. I’ve been on almost all of the biologics but no help. Currently only on meds for pain; Cymbalta, Gabapentin and Hydrocodone. I just had my yearly AVISE test and awaiting results. Pain has now spread to left hip.
Am I the only one with this? At times it feels the docs don’t believe I’m sick.