[Yaa101]

When you have a sitting job, the chance of developing a stenose in your L1-L5 vertebrae when getting older is very large. You need to get off your chair at least once an hour walking around a bit, also you need to do low impact sports like walking the park or something like that. For acute back problems you need at least do mobilizing exercises for the lower back and if a vertebrae stays stuck you can opt for a chiropractor to force it to go lose. Most back problems that cause back pains are stuck vertebrae that make muscles working hard to compensate. So deal with your issues and don't wait or rest, that makes it much worse. My experience in acute situations is that mobilizing exercises can take 3-4 weeks to make the pains go completely, after a few days however they already get rid of the worst pains like nerve pains from stuck nerves between vertebrae. After that period I personally start mobilizing exercises immediately when I feel the slightest back pains and then it helps within a few days and keep the pain levels low, so keep exercising. Since doing these exercises, my need for painkillers for back pains went away.

[Tipewryter]

I have to get off my chair after like 15 minutes anyhow, because work with the computer causes intense pain in my upper back.

Walking on the other hand causes pain in my lower back. Not as much though.

Regarding stuck vertebrae - how would one even know if one is stuck? Is there a way to test it?

[Yaa101]

Go to your doctor and ask for a physio consult at a therapist near you if you really need to know a specific place of your lower back pain. The exercises are common for the whole lower back, you can find some when googling with "mobility exercises lower back". Success solving your problems. BTW upper back problems can also be solved with the right exercises, upper back problems also often can cause intestine and other problems like stomach, kidney and liver. Nerves have 2 main functions, steering all parts of your body and feedback to the brain.