Hello,
Because of accident some soft tissues may get injured nothing to worry as your x ray is mormal
Just apply ice for about 5-7 min twice a day
Later apply diclofenac gel
Later do few stretches twice a day
Do stretches for biceps, deltoid, triceps.
Do these twice a day.
Next Steps
If your pain stlll persists do contact to your nearest physiotherapist
Health Tips
Do not lift heavy weights above your shoulder