Hi dynamiteaudz ! for pain take painkiller ibuprofen or diclofenac
. need to give hot compress to affected area. Apply pain reliefing ointment. Take rest. About gabapentin
. It is for brain and neuro pain and mirtazapine
for anexity and depression they won't help in bone pain. And last check RH factor for rheumatoid arthritis
. get healthy soon. Bye.