Hello, i have had bad posture for most of my life. It didn t cause any problems until recently, i ve tried to fix it. At night i sleep with a pillow under my back to attempt my spine to get used to the shape, i wake up with pain along my back, and looking in the mirror, seeing signs of red marks along my spine. I m not sure if i should stop my retual that i have, with my pillow. Or if the red marks are something more severe. Any recommendations or answers?