so it all started when i wanted to do deadlift. i first injured my lower back doing it. but didnt want to give up on it so when i recovered i went again, then every time i did it i get lower back stiffness or pain. after the lower back pain went away i started getting other pains like shoulder, knee pain and then lower back pain again. it wasnt until this week that i did deadlift again, but now instead of lower back its middle back pain. it only hurts when sitting and comes and goes away. i asked a professional if it was herniated disc, but he said its mostly muscle because i dont feel any pinched nerve. anyways, could i be hurting myself because of the deadlift or is it my emotions? i can tell im depressed because of my life right now with a lot of anxiety and other things.