Your posting is very familar to me.
For the past seven months, I have had increasing hip problems. Weight-bearing, groin and burining.
My doctors did a great deal of testing and referred me to a new Fibro doctor. (I was diagnosed with fibro about six years ago).
After four months of pain medication, that did nothing, they put me through another battery of tests.
I have AVN Avascular Necrosis.. it is easy to look up on the Internet, just type in AVN.
AVN is a degenerating condition of my femoral head, the hip joint is collapsing. I have been on walker for nearly six months.
I am scheduled for hip replacement August 25th.. will keep you updated on my recovery. I should be on crutches for at least three months.. no weight-bearing.
Hope this real life experience helps