Burning lower back! Feels hot sometimes.

I had observed a swelling/lump on my back since 1 week without any pain. Still, to be on the safe side, i got it evaluated by a surgeon who said its normal, but still anxiously, i showed it to another surgeon (orthopedic) who did some physical tests, asked me to bend and pushed and all stuff(to remove my fear of chordoma), and said its just a fat deposit. I am satisfied with that but here are some issues i am facing: 1. When i go for bowel movements (indian), i feel that area of skin to be a little stiff/tight. And after today's gym session, i feel a little burning there. (Superficially, not a deep ache or something). Adding the image for reference. Note: CBC is fine, no pain there, general discomfort, area feels hot sometimes.