Off topic but always make sure with narcotics that there's a bowel regimen too to prevent constipation. Other pain relief techniques you could use is heat or ice if clinically permissible or lidocaine...
I am a new nurse as well! I would think ABC, airway breathing circulation. So, breathing is high, how is the O2 sat, what has the patient been running for BP, maybe sepsis or dehydrated because of low...