I wake up everyday with awful back pain. It’s mid back / sides and really hurts when I lay on my sides. It doesn’t help that I’m a side sleeper. I’ve noticed a certain link between the pain and if I lay on the sofa the night before. If I had a night on the sofa my back is 2x worse than usual the next day. Does that prove that the pain is from sitting/lying with bad posture? If I don’t lie on the sofa my pain will be there next day but not as bad. My back pain has been around for over 3 years and it’s always there but I have good and bad spells. Also it’s generally much worse in the morning, once I’m up and struggling through the day it generally gets a bit looser.