Aaaah mannnn, I feel for you guys suffering through this!!! That's how all my issues started!!! Be EXTREMELY glad your MRI's don't show any issues with your lower spine though! In my case, my GP thought it was a pirifomis muscle problem BUT couldn't understand why it was affecting BOTH sides. No heel pain though. He sent me to an OS who prescribed P/T + ultram. As it worsened, the GP then thought it was sciatica, but then the problem GREW! Don't mean to scare you - this is just my particular issue.

Do you get nerve or muscle spasms in your leg / legs? Can you identify anything that may have precipitated your pain - a fall, stepping in a hole, picking up something heavy, etc.?