Levels of discomfort

I understand completely that Dr's are scared to prescribe narcotics to patients due to people who abuse them but what about those of us who really need them? I have been dealing with this back discomfort since December 07 and it just keeps getting worse. The discomfort I feel every single day is enough to make a person go crazy. If I stand too long, sit too long, walk longer than 20 minutes, bend backwards or shift my weight any faster than an 80 y/0 man with the brim hat drives on the expressway...I feel extreme discomfort. Pain in my lower left side of my back that sometimes shoots down my left leg like someone has stabbed me with a hot blade and rips it down my butt cheek. MRI and EMG has showed nothing so the Dr's dont believe anything is wrong with me so they wont do anything about the discomfort with "no proof" of injury. I am at the point where I want to scream or go postal on these ignorant Dr's. It is sad that the people who actually need help are overlooked because of these fucking retards who fucked it up for everyone. I guess if I were famous I could get whatever the hell I wanted. I have resorted to buying off the internet. I ordered Darvocet something just strong enough to take the itch of the pain and the shit came from India and wasn't even real Darvocet.
I am not the type of person to do things illegally, especially with drugs. No I am not out buying narcotics off the street, I'm really not that stupid. It is still illegal to take narcotics not prescribed to you and yes I am not going to lie I have been given Lortab, Vicodin, Soma and Darvocet from friends and yes I took them. I've done everything but post an ad in the newspaper saying "Local girl with back injury needs medication, now accepting donations of anything stronger than Motrin 800"...LMAO!!!
I hate feeling like I have to take what I can get but what else can I do? I am so tired of feeling like this and doing what I have to do to survive this discomfort until the Dr's actually do something other than talk to find out what is really going on in my back.