How do I know if I have a backache or Kidney issue? It hurts upper right side under ribcage, but rest of back can feel sore. I have no fever, vomiting

Need more info... The provided info does not suffice to deduce right diagnosis, but it is not that hard to get right care by systemically follow suggestions described in what and how should we do at feeling sick? in https://ebettercare.com/what-and-how-should-we-do-at-feeling-sick/. Then you can work better with doc so to reach right impression for right care. All the best to your health...