I've recently taken up Ninjutsu, & we did some tumbles in class on Tuesday, however, since I'm new, I didn't position my body correctly during movement, & I slammed my lower back hard on the ground! The next day I could feel the pain... It hasn't stopped since Tuesday. My brother said he can feel a knot in my erector muscles (on the right-hand side). I've tried arnica oil, a warm bath, & I've even tried muscle relaxants which I take with anti-inflammatory tablets. Nothing works... In fact, it doesn't even take the pain away!
My brother says that when a muscle gets hurt/damaged, it pulls itself into a knot (spasm). I can't turn my body without having to feel pain. When I push the back of my thumb into those muscles, I can feel it, but I have to press deep in order to know exactly where it hurts. People say that it will at least take up to a week or two in order for it to heal... I'm very scared, because I know without your back you can't do anything!
I would greatly appreciate any advice... Thank you so much for your time!