You couldn't have come to a better place! It's been a godsend coming on here and talking with like minded people, having the odd grumble and asking for advice. There's always someone with something to say even if it's just kind words.
Your not alone in feeling older than your age and I'm 18months down the line and still they are trying to find some relief, but I'm not giving up hope just yet. Just started IV Remicade in hospital, straight away it helped the back issue (within days) still other bones and areas it's not yet reached but I'm hopefully, time will tell.
Take care and keep posting, we're all listening.