For me, regular exercise got rid of the back pain that I used to get from working at a desk. This took about two months until I didn't feel any pain anymore. In

For me, regular exercise got rid of the back pain that I used to get from working at a desk. This took about two months until I didn't feel any pain anymore. In those two months, I experienced more severe back pain though than I had before. As it turns out, this probably came from eating too many nuts. So as I started working out more, I also began to eat more healthy, including lots of nuts every day. After a couple weeks of this, I started getting this intense pain in my upper back on the right side, which I never had like this before. I was having this pain for about two weeks and it was there constantly, no matter if I was sitting at a desk or not. Any massages that I got to address this didn't help. According to a video (https://www.youtube.com/watch?v=jcrii9_Um0I https://www.youtube.com/watch?v=jcrii9_Um0I), eating lots of nuts bloats up the gallbladder, which then presses on a nerve. This can lead to pain on the right side of the back and, although I didn't experience this, pain in the neck and headaches. I then stopped eating nuts and the pain was gone two or three days later. Today I do eat nuts again. But if I eat lots of them every day for weeks on end, the pain does come back, although I never had it as severe again. So maybe even though your pain tends to be on the left side, dietary changes could be worth a try.