Sorry to hear of your misfortune! Hopefully all will go well and you will be pain-free soon.
Back in 1979 I was in a car crash that sent my head into the windshield (seatbelts weren't required then). I looked like I had run thru a rosebush. Well...long story short about 6 years ago I had a piece of glass come out! It was about as small as the lead on a new pencil. I knew it was there but couldn't do anything about it. The doctor said it wouldn't show up on x-rays because it was glass and to just let it work its way out. It looked like a pimple for a time before it finally came out.
Good as new now, just kinda freakish!
kathyd