I've been dealing with a nagging injury for a year now. My left part of my low back/upper glute (the spot is RIGHT below the pointy bone) gets really sore and causes a sharp pain after squatting/deadlifting/leg pressing. Nothing seems to instantly resolve it and it does lessen after a few days.
I've focusing on strengthening my core and glutes, but this isn't going away. It feels like it needs to "pop" and only hurts when I try to stick my butt out/arch my low back.
Has anyone experienced this injury? Please see the pictures referencing the exact location. When I feel the area with my hands, I can feel a tendon/muscle move back and forth as well. It feels jelly like in a sense.