My wife experienced a similar situation! Have a Cobalt / Chromium test preformed; request it. Her orthopedic declined having it done, my wife saw her primary doctor and had her do it; Cobalt was 17.6 ( toxic) and chromium was over 9.0. Also check for a staph infection! My wife has had six hip surgeries now. One thing we have learned! Be a strong advocate for yourself! My wife also had a fractured pelvis from either the original surgery or when she was dropped in rehabilitation center; extreme pain until they finally did a revision; 9 later. I cannot say it enough! Be respectful yet a strong advocate; there is an answer for her issue! Good luck and once you receive the correct answer it would be nice to hear the positive results!