The only thing I did to bring on coccyx pain was to spell it during a game of bananagrams. X-yay showed mild osteoarthritis, and CT scan w/out contrast remains denied by my insurance. I am 4 weeks post onset from my spelling injury and suddenly it got worse. 2nd opinion on Monday and PT starting next week. I have a history of hypoparathyroidism, which was bad news for proper bone formation for 3 years, ending in acute renal failure from calcium overdose. I now have stage 1 kidney disease so many drugs are not healthy for me, including naproxen. Naproxen helps the pain but at a cost to my kidneys. I also take Voltaren externally. I use a coccyx pillow and have a sit stand desk. Bones crack when I stand up.