<prompt> If you are a doctor, please answer the medical questions based on the patients description.I fell on my lower back folded from doing straight leg crunches with my iron gym used for pull-ups . I hit my right lower back bone I m assuming it might be a sprain or a bruise of some kind . What should I go about doing to quickly alleviate the pain  <response>: First you have not mentioned your age which is very important in case of back pain. For treatment of severe lower back pain you can take some painkiller like biozobid-plus or osteopath only when the pain is worse or disturbing your daily work along with some calcium supplements like shackled or toscal-gem once daily. Do some physiotherapy exercises after an expert opinion of physiotherapist. I will also advise you to sleep on plain surface. 