First thing that popped into my head was hematite - it is grounding (which will help keep your centred when you're on meds) and also good for pain relief. Make sure you cleanse it often though because it will suck up any negative energies quite quickly.

Have you been able to access any physical therapy/hydrotherapy to help you move forwards with healing your injury? I'm feeling a hydrotherapy pool with salt water could assist you enormously with your emotional health at this point in time. Good luck with it.