I Had A Hip Replacement 3 Years Ago. There Has

I had a hip replacement 3 years ago. There has been a large lump there since the replacement. I initially had 6 vials of blood taken from the area. The lump or knot has progressively gotten worse until it has become extremely sore. The doctor has told me it is of a compressed disc . However I have no back pain. I have also been told it could be from a torn muscle around the replacement as well as other excuses. It has gotten to the point it is causing extreme pain. Do you have a suggestion