How To Treat Mid Hip And Gluteal Pain?

Hi
I have been having mid hip pain and glutel pain for almost a couple of months. I have tried yoga and tired walking but after a little while I get a sharp shooting main in the area. Now the pain is also mid back. In an MRi an arachnoid cust inside the spinal chord was found but doctors say its an incidental finding and that I should ignore it. please help