Hi. I m not sure if a vertebra slipped out or if it s something internal. I had bent over to rinse the shampoo out of my child s hair and when I went to straighten out, I couldn t. I was in so much pain I fell to the floor. I had iced, heat, stretched it out. I did a dose of prednisone and flexiril. It did get better but it hasn t fully gone away. It s actually starting to get worse. I can t stand or sit whereas the pain is going all the way to my tailbone. I have NOT lost and bowel or bladder function, which is why I m wondering what it is.