Surprisingly A/C Joint injuries a pretty common in US Army Mechanized Infantry and Airborne Units. The old school teaching was to treat the injury as a fracture/separation until proven otherwise. An X-Ray was warranted right away but the CT was usually delayed as hairline fractures could take up to 10 days to show up. I have treated very painful A/C injuries that did not show any changes in X-Ray or CT. Some did not even have bruising at the site. Kinda like the old adage that a cracked rib can hurt more than a fractured one... Ha

Hoping for your fast recovery. Note... if it hurts don't do it...