no pain relief

i was recently at my hospital's er with an acute migraine. i am on disability due to my migraines. this young doctor comes in for a minute and then leaves. the nurse returns with a steroid shot, which does nothing for my migraine. my arthritis felt better for a few days though. i told the nurse the medication would not work and she said this was all the doctor would give and my dismissal papers were being prepared. i asked to speak to the doctor to no avail. i went home in worse shape than before.i thought everone had a right to pain control. even my regular doctor could do nothing since she had not seen me in the last 24 hours.how do you make someone understand your pain. i thought about telling him a bullet to the head could ease my pain but i was afraid they would commit me. i take regular meds from my neurologist yet sometimes i get very severe headaches and need some pain relief. someone please help me.