I need a little help for my back

My back pain increases more and more each day. Sometimes the pain even wakes me up in the middle of the night during my sleep. I drink 2 paracetamol everytime the pain increases but that’s not advisable unless you want to damage your kidneys permanently. I’ve been looking in Bambang (central haven where you could buy all medical supplies) but it seems that it’s the only one missing from their supplies, how sad :(

I tried visiting the website of orthopedics but it’s just some blah blahs about their seminars and achievements.  The sports shop was not a big help also, all they have are gloves and weights. I just hope someone from the internet can read my thoughts and help me about my problem, i just need some shared information where I can buy a back brace or back support or if you feel gracious enough I would likely accept any "hand me downs" back support to keep my back straight