Not sure what to do

Had a fall about a week ago and since then have had pain in my pelvis, bottom and legs that never seem to go away. After 2 days off went back to work and not even a quarter into my shift the other day I was in absolute agony that got worse throughout the day and I'm always on my feet. Im supposed to finish the end of next week for annual leave but I'm not sure I can deal with this pain for 7 more 12.5hr shifts and thinking about it makes me want to cry. Any advice??