And im serious. Its weird, wasn't doing anything thing crazy, was just warming up and felt this pain around my left butt cheek. Couldn't really move well as putting on my left butt would signal this sharp pain. In addition, i started to get little aches on the left side of my back as well. Any know of any streches I can do to loosen my muscles up? Or any physio experts out there know why the pain would also radiate to my back? Thanks!