Just got back from the vet. She felt around where Bruce told me he found sensitivity on his shoulder. We decided not to do xrays and give him pain meds. If he doesn't seem to get better in a week we will take the next step.
She said she can't tell if it is fractured by feeling it. But even if it is, there isn't anything to be done about it. So pain meds and limited activity until he heals.
I feel much better! I know he'll be fine because he is already walking better (and faster) tonight.