While shovelling my neighbours steps, I slipped and fell on my butt. I instantly fell like I was going to vomit , but didn t. When I finally got up I threw some salt on the step and went back in. This was about 5 days ago, the pain is slightly less, but still significant. It also feels as though I m sitting on a baseball. It doesn t hurt while standing, but it is extremely painful to transition from sitting to standing. I can t sit without pain on anything other than the toilet seat. And the only relief I ve found is 800mg Advil muscle and joint , but that doesn t last long.