Oh bless your heart. I so emphasize with your issues. I was told when a infection is in a replaced knee there is no remedy but to remove hardware because infection grows topically on metal and antibiotics will not phase them. They cleaned out the area put in antibiotic cement and put in a spacer. I don't have advice, I don't know enough about this process to advise. You've been through so much trauma in the last yr it sounds like your reserves are depleted. In your position I would be on a good diet and supplement with vitamins and extra C and B. I'm a big supplemented. Mentally all any of can do is hang in there and don't beat up on yourself for hopeless or crying. I've been there and here I am a few weeks later feeling hopeful. That hopeful feeling comes from rest, time and healing, hopefully you'll get there soon. Let me know how your doing, I'll pray for you.