Hi, I have had a few bruises on my spine for the longest time! They just don't seem to go away and bulge out just a tad. But anyways today I did an exercise and on one of them it said do a "spinal massage". You curled on while sitting on your butt and rolled back on your spine and then forward again. I did it not thinking about my back 3 times. And once I finished I noticed this red vertical line on my lower spine. It really scared me too please if you know what this could be thank you! Oh and the bruises themselves do not hurt even when I press on them. But my back has been very stiff and sometimes the pain is worse sometimes I can't tell too.