Wow, how frustrating!! I so feel for you. What is your doctor saying? They are your best person for true insight to your particular situation. I have read that depending on how your hip replacement done, that the prosthetic can be problematic. Normally they are made of metal or plastic and if bacteria attaches to these surfaces, it is hard for the immune system to attack it. https://orthoinfo.aaos.org/en/diseases--conditions/joint-replacement-infection/ How do you think your immune system is over all?